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Let’s say that your company is running a standard control and variant AB test on a feature to increase conversion rates on the landing page. The PM checks the results and finds a .04 p-value.

How would you assess the validity of the result?

Experiment Validity

You are testing hundreds of hypotheses with many t-tests. What considerations should be made?

What is a key disadvantage of the F-test when compared to multiple t-tests?

What is a key disadvantage of the F-test when compared to multiple t-tests?

Hundreds of Hypotheses

You are testing hundreds of hypotheses with many t-tests. What considerations should be made?

Suppose there exists a new airline named Jetco that flies domestically across North America. Jetco recently had a study commissioned that tested the boarding time of every airline, and it came out that Jetco had the fastest average boarding times of any airline.

What factors could have biased this result, and what would you look into?

What could potentially bias the average boarding time in favor of an airline that only flies domestically?

What could potentially bias the average boarding time in favor of an airline that only flies domestically?

Boarding Times Bias

A new airline came out as the fastest average boarding times compared to other airlines.  What factors could have biased this result and what would you look into?

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Job Title: Software EngineerLocation: Seattle, WA 98101 - RemoteContract: 6+ Months Pay Rate : $56/hr JOB DESCRIPTIONDesigns, modifies, develops, writes and implements software programming applications. Supports and/or installs software applications/operating systems. Participates in the testing process through test review and analysis, test witnessing and certification of software. Requires a bachelor's degree in a related area and required years of experience in the field or in a related area. Has knowledge of commonly-used concepts, practices, and procedures within a particular field. Relies on instructions and pre-established guidelines to perform the functions of the job. Works under immediate supervision. Primary job functions do not typically require exercising independent judgment. Typically reports to a manager. Time Zone - will be working in PST time zone Minimum - 3 yrs of exp . Right hand for technical Lead /Some lead role will be beneficial Soft skills - communication skills , independent handling ,written and verbal 3 yrs with Python - coding language , Coding is required JavaScript or Typescript, - MUST (React or Angular (Front End )- MUST Some exp with AWS , cloud computing in Lambda , Dynamo DB, Step Functions

Shift: Ability to work to flexible schedule including days, afternoons, midnights, and overtime as needed Must Haves:-Project manager/project engineering manager - prior experience (5-10 years).-Ability to plan well ahead of time and identify additional issues and concerns and have a plan B, C or D as things unfold. Must be able to pivot easily within a small window of time.-Familiar with food related requirements, and standard GMP's. Description: The Project Engineer exercises functional authority for planning, organization, control, integration and completion of engineering projects for the plant or within the area of assigned responsibility by performing the following duties personally or through subordinate supervisors. Key Responsibilities of the Role:• Ensures projects are completed on time within budget or with successful attainment of objectives• Completes specific phases or aspects of the project such as technical studies, product design, preparation of specifications and technical plans and product testing• Coordinates activities concerned with technical developments, scheduling, and resolving engineering design and test problems• Controls expenditures within limitations of project budget• Prepares interim and completion project reports• Provides functional and technical support to the factories to minimize production and maintenance problems• Utilizes the Kraft Heinz Management System (KHMS) capital chapters and templates to comply with best practices for all projects• Participate in QRMP implementation and maintenance• Apply engineering expertise to equipment design, problems solving, and quality improvement• Participate in committee or task forces where necessary to contribute to company goals• Development of project scope, justification, and factory/company impact• Development and management of cost controls, asset controls and scheduling controls• Hires and supervises various contractors in the scope of project manager. This may encompass all project areas and total up to 50 people dispersed among distinct trades• Cost Reduction/Production Improvement; Participate actively in Company efforts to reduce operational costs and improve finished quality attributes. Develop projects where appropriate to initiate utilization of cost cutting/quality improving technique or equipment• Analyzing and preparing appropriation request for capital improvement and replacements of inefficient assets, collecting and organizing data for future capital improvements on a five-year capital spending budget basis; maintaining an active cost reduction program• Direct and compile capital budgeting; collect future capital project requirements from factory departments and compile into a final five-year capital budget• Control the current fiscal year budget to ensure that the current factory needs are met as well as assuring that its needs are well positioned for the future• Analyze and prepare appropriation requests; prepares and financially analyzes all capital and expense appropriation requests. This includes new facilities and equipment for factory operating improvements, capacity increases and replacement of equipment.• Ensure contractor compliance to all applicable GMP and OSHA guidelines Qualifications:• Bachelor of Science degree in Engineering from an accredited engineering school or related field or 5+ years of experience in full cycle project engineering experience required• Strong background in mechanical and hydraulic systems, packaging methods, and materials, electronics and computer applications, and electrical systems• Ability to read, analyze, and interpret general business periodicals, professional journals, technical procedures, or governmental regulations• Ability to write reports, business correspondence, and procedure manuals• Ability to effectively present information and respond to questions from groups of managers, clients, customers, and the general public• Ability to apply mathematical operations to such tasks as frequency distribution, determination of test reliability and validity, analysis of variance, correlation techniques, sampling theory, and factor analysis• Ability to interpret a variety of instructions furnished in written, oral, diagram, or schedule form

Job Title: Embedded Software Engineer (47816-1) Job Location: Mossville IL (Hybrid- 3days/week) Job Duration: 12+ Months Shift Timings - Monday-Friday (8am-5pm) Position’s Contributions to Work Group: Research, design, develop, build, and test the low-layer software, such as OS integration, I/O drivers, boot, etc., which interfaces with wide variety of electronic controls hardware (i.e. ECU/ECMs). This assignment builds and documents team software releases. Reason/motivation for request: - Backfill Typical task breakdown: Work can primarily be done off-site, but hardware engagement onsite is mandatory as part of workload. Depending upon the phase of the assignment, typical day would range from reading the client requirements, researching applicable ECU hardware/interfacing requirements, designing solutions, working with peers & tech leads to finalize solutions, coding solution in C, manage versioning, unit testing, and/or regression testing. Work Environment: Position is Hybrid and will require minimum three days’ week onsite. Education & Experience Required: - Minimum BS in Computer Engineering / Electrical Engineering / similar required & 5-7 years industry experience. Will accept Master’s or higher relevant internship/project experience toward minimum. Technical Skills - Required - Significant experience with Jenkins build platforms required (or comparable). - Bash Shell scripting experience preferred. - Proficiency in Git version mgmt required. (Clearcase experience preferred.) - Real world real-time embedded device driver experience is key requirement. - Experience troubleshooting/debugging using tools such as oscilloscopes - Experience designing embedded electronics controls, display, or telematics software, including development of device drivers, SPI/I2C peripheral interfacing, hardware diagnostics, operating system configurations, non-volatile memory interfacing, board initialization, and other chip-level interfacing. - Experience with RTOS, control software design patterns and anti-patterns, ANSI C, Python, and other programming languages. - Experience with software development processes such as Agile. Soft Skills - Verbal and written communication skills - Problem solving skills, customer service and interpersonal skills. - Knowledge of reading schematics and data sheets for components. - Ability to troubleshoot issues and make system changes as needed to resolve issue. Disqualifiers/Red Flags: Test engineering, controls engineering are not primary focuses. Can be part of work experience but should not be sole experience. Core skills above should be reflected in bulk of work experience.

Required Skills Proficiency in Snowflake, Mattilion, and DataStage for data processing and integration. Must have minimum 2 to 3 years of Healthcare insurance domain experience. Experience with EDR (Electronic Data Repository), SSDS (Secure Data Storage), and ADF (Azure Data Factory). Expertise in ELT (Extract, Load, Transform) processes for data manipulation. Familiarity with FHIR (Fast Healthcare Interoperability Resources), CCDA (Consolidated Clinical Document Architecture), and HL7 (Health Level Seven) standards. Capable of CCDA to FHIR conversion and data curation tasks. Knowledge of Azure Cosmos DB, Azure SQL DB, and Azure Synapse Analytics for cloud-based data storage and analysis. Skills in data warehousing principles and data modeling techniques. Experience in data analysis, data mapping, and data transformation techniques. Minimum 5-7 years of experience in a similar role and level. Responsibilities Utilize Snowflake, Mattilion, and DataStage for efficient data processing and integration tasks. Implement EDR, SSDS, and ADF for managing and processing healthcare data. Execute ELT processes for transforming and loading data into target systems. Perform CCDA to FHIR conversion and ensure data quality and integrity. Collaborate with cross-functional teams to define data requirements and mappings. Utilize Azure Cosmos DB, Azure SQL DB, and Azure Synapse Analytics for storing and analyzing healthcare data. Design and implement data warehousing solutions to support reporting and analytics. Analyze data to extract insights and support decision-making processes. Document data analysis, mapping, and transformation processes for future reference. Mentor junior analysts and provide guidance on technical aspects of data analysis. Stay updated with emerging technologies and industry trends in data analytics and healthcare informatics.

Job Title: Senior Software EngineerHybrid @ Mississauga, ON (2 Days/Week Onsite)Duration: 15+ MonthsPay Rate: $55-$62/hr Description:Client Sequencing is not only changing science, but we are changing lives. Our software teams are laying the groundwork for the future by developing powerful bioinformatics algorithms, data analysis tools, and software/systems infrastructures so researchers and clinicians can make better health decisions faster. The path to curing cancer lies in ones and zeros as we work with next-generation genomic sequencing, a new frontier. The complexity and sheer size of the data in the life sciences will make astronomical data problems look modest. Do you want to develop software products that scientists and others in the life sciences will use to diagnose, find treatments, and eventually beat diseases like cancer? Our team builds highly scalable, reliable software and secure systems for better diagnostics. Come join us! Who you areWhen you join us, you will have meaningful work developing an innovative technology that saves and improves lives around the world. As you collaborate with some of the best engineers in the industry, you will make a huge difference! Our team is collaborative and fast-paced. Responsibilities:• Collaborate with marketing/product, engineering and clinical teams to translate user needs into highly usable design outcomes.• Analyze and prepare requirements for specific module of software system design, implementation, modification, or utilization.• Investigate design approaches, prototypes concepts and evaluate technical feasibility. • Design, modify, develop, write, and implement software programming applications applicable to devices, systems and solutions.• Design unit, integrated, and subsystem test processes and procedures.• Prepare and write detailed, specific documentation regarding design requirements, coding, testing, and debugging of software applications.• Maintains existing software systems through revisions and documentation.• Ensure all user-interface design requirements are met as part of the product development process.• Conduct layout adjustments based on user feedback.• Lead software integration efforts on complex projects.• Lead and contribute to development and testing in an Agile/Scrum environment and delivers highest quality software against aggressive schedules.• Embrace engineering processes enabling robust product design, compliance and improvements in quality, better customer experience and better product/market fit.• Makes major contributions to strategic directions and projects through knowledge of technology and its creative applications.• Trains others using a variety of methods on the theoretical and practical basis of techniques, processes and products.• Other duties as assigned by management. Qualifications:• BS/BA degree in Computer Science, Science or Engineering or relevant field. • A minimum of 8 years of related experience as a Software Developer in an industry setting, with experience in commercially launched product preferred. Or, equivalent combination of advance degree with practical experience to perform at this level.• Expertise in C, C++, C#, Object Oriented programming, .NET, WPF, Angular, software architecture, networking, distributed systems, and Instrumentation/Robotics;• Experience in Typescript, Javascript, web based front-end frameworks, Python, Linux and Virtualization.• Demonstrated experience in owning and driving design projects from idea to launch. • An understanding of the fundamentals of design thinking.• An interest in the field of biotechnology and/or medical device system.• Experience in biotechnology, medical device system and instrument, and web development/software engineering.• Experience with SAFe or SCRUM Agile Software Development environment• Team spirit; strong communication skills to collaborate with various stakeholders. • Excellent verbal and written communication skills, and be able to write documentation and reports in a structured format.• Able to work independently.• Detail oriented, proactive, self-motivated and driven.• Follows directions and adjust to changing priorities in a fast-paced environment. • Positive attitude and ability to multitask.• Strong project and time management skills.• Ability and desire to learn quickly in a challenging, fast-paced environment. • Uses company practices for SW integration and test at an expert level. • Develops and mentors and assures growth in practices.• Understands and uses expert practices for requirements management, development and analysis. Must Have: We are looking for a seasoned software engineer with over 8yrs experience; comfortable with jira and has good project management experience.

Role - Business AnalystMax Charge -350 - 380/Day (inside IR35)(via Umbrella)Location - Northampton Hybrid 2 days Role Details: Please provide a detailed Job Spec - Responsible for the definition of requirements, including the creation and maintenanceof Business Requirements, Detailed Specification documents and subsequenttraceability to their corresponding Business RequirementsCreate and execute project work plans, incorporating people, process, and technologychange across the GroupRevision, as appropriate, to meet changing needs and requirements; identify resourcesrequired to deliver project and assign individual responsibilities; manage day-to-dayoperational aspects of a project and scope and produce financial forecasts/estimatesAbility to determine red flags and judge the need for issueAble to meet timelines and turn around completed cases to meet service levelagreements without compromising on qualityAbility to work independently and deliver against commitmentsAbility to work in an evolving digital environmentShould have good knowledge & understanding on AML and KYCEnsure that the project is delivered within the financial requirements of the projectsponsorRequirements: Detailed Specification documentation skill, with a proven track record of successfulproject implementation, from initiation to completionExperience of the whole project life cycle and the ability to operate in the initialconceptual design phase, in the depths of testing phases and all other stagesBanking experience in the regulatory space which includes demonstrable experienceworking with technology, as the candidate must be comfortable discussing issues andchallenging requirements within a technology team. The candidate must have excellentcommunication skills, both verbal and written, and must be able to interface withDirector/Vice president level project sponsors and stakeholdersExperience implementing AML Transaction Monitoring Tools, ie Actimize, Client FCCM,Verafin etcThe candidate should be familiar with AML and Transaction Monitoring typologies toensure that relevant AML associated risks relevant to the bank are captured andaddressedA methodical and diligent approach, with good attention to detail. Experience inmanaging delivery of regulatory projects, incorporating IT change is a must.Understanding of technical business analysis is also a requirement, as the role willinvolve performing detailed analysis activities, in addition to the Project ManagementresponsibilitiesPrevious exposure to governance, control, and risk managementRequired Skills: Minimum of 4+ years’ experience working in Agile methodology and a deepunderstanding of various phases of the Software Development Life Cycle; preferably inBusiness AnalystShould be familiar creating user / process workflows using tools like VisioMust be proficient in MS office (Word, Excel, Visio, MS Project, and PowerPoint)Ability to communicate clearly and effectively with both technology/developmentExperience in developing and maintaining an appropriately prioritized backlog of userstories for implementation by the teamProven collaborative abilities with Application Managers/ Platform Owners andDevelopmentLeads to convert Business and Technical Enablement/ Tech Debt/ Automation Backlog/SonarPrior work with business and technical leads to determine scope and priorities forproduct development cyclesAbility to create and manage project plans in MS Project or similar softwareAbility to create and present executive level dashboards and status reports to SeniorLeadership and cross-functional stakeholdersADDITIONAL: Experience in financial domain is a PLUSExperiencing in financial crime domain is a PLUSExperience in working on large data applications is a PLUSRole Skillset (e.g.Designer, Agile lead, Java Dev) – Key skills (most important) Data analyst, Client, financial modelling, software development lifecycle

Duration: 12 Months Client Financial Services manages customer-returned End of Lease computer hardware world-wide with the remit to accurately terminate leases & invoice customers accordingly. We also make available to Sales Teams a consistent supply of all types of hardware from tablets, notebooks & printers through to complex datacenters from all commercial vendors. The End of Lease Returns Team currently has a vacancy for a Junior Data Analyst and invites recent graduates to apply for this key back office role based in our hardware processing site in Erskine. This is an exciting early-career development opportunity for a suitably-qualified & motivated candidate. On-the-job training will be provided. Role• Match physically-returned hardware with those originally leased• Analyze customer lease contracts in detail• Interact with customer-facing specialists in-country• Terminate lease contracts with a high degree of accuracy• Resolve complex data comparison issues• Efficiently prioritize daily tasks Education• Recent degree in any discipline Person specification• Confident MS Excel user• Good communicator - written & verbal• Good problem solver• Data analysis ability• Good time manager• Ability to focus on fine detail

Job Title: Software EngineerLocation: Mississauga, ON (Remote)Duration: 12+ months ContractRate: up to $70/hr on T4 Job Description:The Visualization and Interactive Data Analysis group within gRED Computational Catalysts is a group of scientists and engineers who build interfaces to help scientists better understand data. The development of high throughput methods to profile the genome, screen compounds, and automatically collect images rapidly generates vast amounts of data that enable us to better understand the underlying causes of disease and identify treatments. However, translating these data into insights to identify drug targets and candidates remains challenging. The sheer size of these data necessitates better techniques to query, explore, and analyze them. Moreover, these datasets are often highly dimensional, requiring the integration of data modalities to understand their meaning.We combine our passion for visualization, information processing, and user-centered design with expertise in manipulating data to extract scientific insights – plus the engineering skills to bring this vision to life. Working closely with scientists who are experts in a particular disease area, we build easy-to-use tools to enable exploration and interpretation of large, heterogeneous data and analyses.We also develop and share new methods to visualize and interact with data.Within this group, you’ll lead efforts to design and build intuitive web-based applications that allow biologists to understand the genomic drivers of diseases. Responsibilities:Design and implement effective and delightful interactive interfaces to explore, visualize, and analyze data to help scientists develop scientific hypotheses and insights.Solve challenging problems in data visualization and interface design.Develop highly performant, responsive, scalable analysis software for large datasets.Work with computational scientists, biologists, and other software engineers to elucidate the emerging needs of our scientists, whether they are working at the keyboard or the bench.Collaborate with distributed scientific and engineering teams to support your software development efforts.Contribute to the broader community through open-source software development. Required Qualifications:BS or higher in bioinformatics, computer science, mathematics or related fields.5+ years' experience (including any graduate school) developing tools for interactive data analysis and visualization.Expertise in modern JS (ES6) programming.Expertise in developing web applications (React, Vue, Svelte, or similar frameworks)Demonstrated expertise with JavaScript data visualization libraries, e.g., D3.jsExpertise with high-performance web-based visualization technologies, e.g., WebGL.Proficiency with accessing and visualizing large amounts of data.Experience with integrating with and consuming APIs.Familiarity with cloud infrastructure, particularly AWS, to deploy web applications.Passion for continuous learning and teaching others. Nice-to-haves:Expertise in data visualization and information processing principles and methodology.Experience building and deploying APIs.Familiarity with UI design best practices, user-centric design, user research, usability testing, and iterative design.Demonstrated adherence to best practices in software engineering, particularly version control, testing, and appropriate use of abstraction.Data wrangling, processing, and analysis in Python and/or R.Experience building interactive data apps in R and Python (Shiny, Streamlit, etc.)Knowledge of WebGPU.Biological domain knowledge, specifically in single-cell genomics.Familiarity with formal build/release/deploy and continuous integration frameworks.

Job Details Job Title:: Embedded Software Engineer 2Job Location: Hybrid 3Days Onsite (Mossville IL) 61523 Job Duration: 12 + MonthsDaily Schedule: Must Haves<ul><li>Canope/Canalyzer</li><li>C, </li><li>C++</li></ul> Position’s Contributions to Work Group: <ul><li>Responsible for performing and leading the requirements, design, development, & test of network communication and foundational information software used in embedded systems on Caterpillar machine & industrial applications for Common Services and Network Solutions team. </li><li>The Software developer and designer will develop embedded ‘C’ and/or C++ code software solutions to meet system requirements. </li><li>This job involves developing and using system requirements to design, develop, and test software components used in machine control platforms, engine control platforms, display, and telematics platforms. </li><li>Specific responsibilities include requirements development and analysis, software design, software implementation, interface between software layers, and development/execution of test procedures. </li><li>Additional responsibilities may include interfaces between hardware and software as well as evaluating operational performance of an overall system.</li><li>The software components must comply with the software architecture standards and all work will be performed as part of the existing team following a common process. </li><li>The software will include components for Data Link and Common Services (e.g.,Data link protocol implementations, Diagnostics, Hardware Abstraction Layer and Information services)</li></ul> Typical task breakdown:<ul><li>Work on project with mentor and team- This would include requirements, design , code and testing of software in C or C++.</li></ul> Interaction with team: <ul><li>Daily communication with manager and team</li></ul> Work environment: <ul><li>Hybrid – Minimum three days per week onsite, more based on business need</li></ul> Education & Experience Required: <ul><li>Requires a minimum of Bachelor’s degree in Electrical, Electronics or Computer Engineering or Computer Science</li><li>2 years experience </li><li>Will consider Master's Degree or above applicable project/internship work toward years' experience but durations must be listed for each on resume with 1 year of experience</li><li>Design and coding of C and or C++ experience - minimum three years' experience.</li></ul> Technical Skills <ul><li>Demonstrated depth of experience developing software in Embedded C and/or C++ - minimum three years' experience. </li></ul> <ul><li>Knowledge of machine systems or mechanical knowledge.</li></ul> Soft Skills<ul><li>Great communication and teamwork</li><li>Problem solving skills</li><li>Customer service and interpersonal skills</li></ul>

Job Title: Engineering ManagerLocation: Aldermaston, UKJob Type: Full Time Contract, 18 MonthsWork Model: Hybrid Minimum Requirement:• Provide the facility design solution.• Deliver integrated facility designs, with appropriate safety documentation, in a proportionate manner.• Assess the suitability of the facility design for the next phase of the lifecycle (e.g. tender; construction; commissioning; handover) and advise the Senior Engineering Manager.• Maintain and promote high personal standards in environment, safety, health, security and quality and be a great team player.• Additional accountabilities for this job profile may be defined and appointed through the Chief Engineer Management Arrangements, with appointees listed within the Company Design • Authorities and Technical Authorities, as held in the company management system. Key Responsibilities:• Be the lead engineering representative on the project. Responsible for delivery in terms of quality, meeting requirements, safety, value for money and schedule. Be the main point of contact for all engineering matters on a project.• Ensure that the Engineering Requirements are suitable & appropriate, and advise the Senior Engineering Manager.• Recommend the budget and programme, to the Senior Engineering Manager, to deliver design.• Assess the suitability of engineering design resources (both internal and external to Client) to execute facility design. Ensure adequate competency and competency records.• Lead, drive, communicate and deliver Facility Designs, with due regard to safety, quality, schedule, cost effectiveness and lifetime value for money.• Maintain oversight of the facility design as it develops via routine reviews.• Deliver, to the SEM, design solutions that meet business needs, functional performance, through life performance and is licensable and deliverable.• Manage the Design Intent and Design Information Configuration from inception through to project handover.• Provide functional support in identifying and implementing change, development and improvement.• Assist the Head of Design Engineering in developing the Facility Design capability within Client, encompassing both Improvements and Resource skills development. Essential:• EC&I/Mechanical engineering background• Manufacturing lifecycle design experience• Project/process management & engineering management experience• Stakeholder management skills• Knowledge of Kanban, mechanical interlocks, gloveboxes Desirable:• Nuclear background

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