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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?

In an A/B test, how can you check if assignment to the various buckets was truly random?

In an A/B test, which of the following is a common method to determine if the assignment to the test groups was truly random?

In an A/B test, which of the following is a common method to determine if the assignment to the test groups was truly random?

Random Bucketing

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?

Softworld Salaries by Position

Job Title: 81025 - Embedded Software- EngineerJob Location: Lexington MA 02420Onsite Requirements:Machine Operation Experience - Duplo Machine Experience is a huge plusMicrosoft OfficeAble to lift Paper BoxesJob Description: The core job functions include:Porting and verification of existing radar mode software to a new tactical processing environment with specific emphasis on radar front-end interfacing, front-end scheduling, processor resource scheduling, command and control interfacing, mode management, and signal processing.Deployment and optimization of real-time radar mode software to tactical class distributed/multi-node processor systems.Integration and verification of radar mode capability function and performance across a variety of processing environments such as lab-variant processors and System Integration Laboratories (SILs).Requires Skills:The effort includes the porting, implementation, testing, and integration of real-time radar mode software onto one or more tactical processing systems/environments requiring the following skills and Experience:Expertise in verification and optimization of real-time control processing and signal processing between different development environments (e.g., Mode Development Kits) and deployment targets (e.g., commodity workstations to tactical processor) is required.The candidates must have 5years of experience in C+and object-oriented software implementation, radar control processing and signal processing software implementation (e.g., GMTI and SAR), industry standard messaging and computation middleware solutions (e.g., MPI and Intel IPP), and Linux operating systems (e.g., RHEL).Education and Experience: Master's Degree or equivalent 10 years minimum experience in computer science or equivalent field.Preferred Skills:Practical expertise with system integration and verification of radar/radio frequency capabilities in bench/lab environments, development of communication capabilities (e.g., software-defined radios), and the Common Open Architecture Radar Programs (COARPs) specification for radar mode development.Skill Matrix:QualificationAssessmentMust HaveDegree LevelBachelor's DegreeYesHardwareReal-Time Embedded Systems (RTOS, VxWorks, Xenomai, Linux)5 yearsReal-Time Software/Hardware5 yearsProgram/Project Management OR AnalysisSoftware Documentation5 yearsProgrammingC/C+Programming5 yearsEmbedded Software5 yearsMATLAB5 yearsMultithreaded programming5 yearsObject Oriented Software Design and Development5 yearsOpenMP, Threads, Real-time Priorities, CUDA, FPGA5 yearsParallel programming (multi-threading, synchronization, etc.)5 yearsSoftware Design/Development5 yearsSoftware Porting5 yearsSoftwareMultithreaded and Multiprocessor Applications5 yearsTestingSoftware Testing5 years 3rd party and subcontract staffing agencies are not eligible for partnership in this position. 3rd party subcontractors need not apply. This position requires candidates to be eligible to work in the United States, directly for an employer, without sponsorship now or anytime in the future.

Job Title: 81252 - Senior Software Engineer Job Location: Merrimack NH 03051 Onsite Requirements: C++ 11 Linux Docker Job Description: We are seeking a Senior Software Engineerto lead and contribute to research and product development in cutting-edge engineering disciplines, primarily focusing on software engineering for defense and advanced technology systems. This position involves working in a collaborative and innovative environment, driving technical excellence in software design, development, and system integration. Key Responsibilities: Technical Leadership:Lead the evaluation and design of complex and innovative software architectures. Serve as a technical leader of small teams and act as a scrum master. Mentor and train junior staff on industry best practices and processes. Software Development:Design, write, test, integrate, and debug software primarily in C++ (11 or later)and other languages as needed. Develop software applications for distributed, multi-threaded, real-time, embedded, low-latency, and device control systems. Operate in and develop Linux environmentsusing containerization tools like Docker. Customer Interaction:Collaborate with customers to understand requirements and align development efforts to meet their needs. Participate in external project discussions and contribute to requirements refinement. Research & Innovation:Define problems, conduct research, and develop innovative solutions in fields like DSP, device control, and military systems. Contribute to the development of algorithms in MATLABand advanced applications in RF, Radar, EO/IR, Electronic Warfare, or Software Defined Radio systems. Required Qualifications: Bachelor's degree in engineering (or equivalent) and 15 years of work experience, or master's degree with 13 years of experience. Strong expertise in object-oriented C++ development (11 or later). Extensive experience in Linux environmentsand containerization tools (e.g., Docker). Demonstrated ability to develop software for complex systems, including distributed and real-time applications. Preferred Qualifications: Experience with software architecture design. Knowledge of General-Purpose Graphical Processing Unit (GPU)development using OPENCL or CUDA. Familiarity with Cloud Native Technologies(e.g., Kubernetes, Harbor, Helm). Expertise in RF, Radar, EO/IR, Electronic Warfare, or Software Defined Radio systems.  Due to the nature of the work, a United States Government Clearance is required to be eligible for the position

Job Posting: Product Manager II - Banking Industry (Payments, Treasury, Fraud) Overview: We are seeking an experienced Product Manager II with a strong background in banking product management, particularly within payments, treasury management, or fraud solutions. This role focuses on driving product strategy, managing product lifecycles, and ensuring profitability and customer satisfaction. If you excel at translating market needs into innovative solutions and have a passion for delivering impactful financial products, this position is for you. Key Responsibilities: Product Strategy & Roadmap Management Serve as the market expert for assigned product lines through comprehensive research, customer interactions, and competitive analysis. Develop and manage product roadmaps and business plans, ensuring alignment with strategic objectives. Represent the voice of the customer throughout the product lifecycle to ensure solutions address market needs and deliver value. Monitor product performance and recommend improvements to enhance profitability, customer retention, and acquisition. Product Promotion & Advocacy Define and communicate the market message for assigned products. Collaborate with marketing to develop promotional strategies and materials. Provide training and conduct presentations to internal teams and customers. Portfolio & Revenue Management Continuously assess economic conditions to inform pricing, positioning, and profitability strategies. Integrate assigned products into sales planning and ensure alignment with revenue goals. Evaluate product risk and recommend pricing strategies to meet business objectives. Product Development & Operational Support Identify and validate market problems through customer and market research. Partner with operations teams to maintain product stability, refine escalation protocols, and drive process improvements. Develop testing criteria for new products and enhancements, ensuring seamless implementation. Qualifications: Bachelor's degree in business, finance, or a related field. Proven product management experience in banking, with a focus on payments, treasury management, or fraud solutions. Strong analytical and strategic planning skills, including experience with financial analysis, market research, and product profitability. Excellent communication and collaboration abilities, with a history of working cross-functionally to achieve product success. Why Join Us? This is an opportunity to manage high-impact products in a dynamic and innovative environment. You will contribute to shaping the future of financial solutions while driving tangible results for customers and the organization.

Job Title: 81025 - Embedded Software- Engineer Job Location: Lexington MA 02420 Onsite Requirements: Machine Operation Experience - Duplo Machine Experience is a huge plus Microsoft Office Able to lift Paper Boxes Job Description: The core job functions include: Porting and verification of existing radar mode software to a new tactical processing environment with specific emphasis on radar front-end interfacing, front-end scheduling, processor resource scheduling, command and control interfacing, mode management, and signal processing. Deployment and optimization of real-time radar mode software to tactical class distributed/multi-node processor systems. Integration and verification of radar mode capability function and performance across a variety of processing environments such as lab-variant processors and System Integration Laboratories (SILs). Requires Skills: The effort includes the porting, implementation, testing, and integration of real-time radar mode software onto one or more tactical processing systems/environments requiring the following skills and experience: Expertise in verification and optimization of real-time control processing and signal processing between different development environments (e.g., Mode Development Kits) and deployment targets (e.g., commodity workstations to tactical processor) is required. The candidates must have 5 years of experience in C++ and object-oriented software implementation, radar control processing and signal processing software implementation (e.g., GMTI and SAR), industry standard messaging and computation middleware solutions (e.g., MPI and Intel IPP), and Linux operating systems (e.g., RHEL). Education and Experience: Master's Degree or equivalent 10 years minimum experience in computer science or equivalent field. Preferred Skills: Practical expertise with system integration and verification of radar/radio frequency capabilities in bench/lab environments, development of communication capabilities (e.g., software-defined radios), and the Common Open Architecture Radar Programs (COARPs) specification for radar mode development. Skill Matrix: Qualification Assessment Must Have Degree Level Bachelor's Degree Yes Hardware Real-Time Embedded Systems (RTOS, VxWorks, Xenomai, Linux) 5 years Real-Time Software/Hardware 5 years Program/Project Management OR Analysis Software Documentation 5 years Programming C/C++ Programming 5 years Embedded Software 5 years MATLAB 5 years Multithreaded programming 5 years Object Oriented Software Design and Development 5 years OpenMP, Threads, Real-time Priorities, CUDA, FPGA 5 years Parallel programming (multi-threading, synchronization, etc.) 5 years Software Design/Development 5 years Software Porting 5 years Software Multithreaded and Multiprocessor Applications 5 years Testing Software Testing 5 years  3rd party and subcontract staffing agencies are not eligible for partnership in this position. 3rd party subcontractors need not apply. This position requires candidates to be eligible to work in the United States, directly for an employer, without sponsorship now or anytime in the future.

Job Title: 81078 - 48X - Information Systems Business Analyst 3Job Location: Cordova CA 95617 Onsite Requirements:New Facility/ New Building/ IT Implementation Project ExperienceHealthcare or Hospital IT ExperienceJob Description: The Business Systems Analyst 3 is an experienced professional who knows how to apply theory and put it into practice, with an in-depth understanding of the professional field related to IT Implementations.This position involves technology-based analysis of business practices, processes, and problems. Develops solutions which may involve process design and policy or procedural changes; create specifications for processes and/or systems to meet requirements, validate requirements against needs.Planning and executing unit integration and/or end-user acceptance testing; may develop training materials for project implementation.Incumbent is responsible for requirements development to satisfy business needs for IT Facilities/Implementations as a part of the 48X project.The incumbent works independently at a high technical level throughout various phases of project to determine user requirements, which may be based on requests or systems analysis and considers the business implications of applying technology to the current and future business environment.The incumbent assesses existing data, applications, infrastructure, equipment, workflows, and technology to analyze functionality, efficiency, and productivity, and then assists IT Implementations/Facilities with development and implementation as part of the 48X construction project to align business requirements. The incumbent must have an equal mix of technical knowledge and business acumen. Incumbents must have the ability to identify both business and technical situations, evaluate the needs, and identify potential solutions. This business analyst is responsible for project planning and drafting detailed plans and/or technical documentation and should be able to take the information gathered and export the information to create metrics, dashboards, and other analytical documents to assist with reporting to IT leadership. Incumbent will also work in conjunction with the IT Facilities project managers to assist with project support.The Business Systems Analyst may act as a liaison for IT Implementations between the business customer, other UCDH departments and IT Facilities technical teams. This role is critical to identifying and driving improvements and efficiency initiatives as it relates to IT Facilities support of the 48X project, fostering both intra- and inter-team communication and cooperation.Applies technical expertise and business analysis concepts to identify, evaluate, and define complex system scopes, requirements, and objectives, with an understanding of applicable business practices, processes, systems, and industry standards to meet end-user needs and requirementsProvides analyses for complex resources related to projects, working directly with all levels of managementConducts complex analysis of business issues and provides recommendations for possible solutions, works with business users and IT project teams to drive decision making and define requirements for processes and project development, ensuring that business and user needs are being metDevelops business requirements, functional specifications, and project support documentation which guides process development efforts, working closely with the process owners, development teams and business teams to ensure successful project implementationParticipates in a fast-paced portfolio of project requests, driving issues to resolution with a strong focus on stakeholder satisfaction and efficient executionInitiates, designs, or modifies complex procedures where standardized policies or procedures may or may not exist. Creates technical processes for systems with a broad impact at a campus and/or medical center levelMay lead or participate in cross-functional teams to address complex business or systems issues as it relates to workflow development and enhancement for projects and/or requests** 3rd party and subcontract staffing agencies are not eligible for partnership on this position. 3rd party subcontractors need not apply. This position requires candidates to be eligible to work in the United States, directly for an employer, without sponsorship now or anytime in the future.This client is a US Federal Government contractor and is legally required to hire US Citizens. US Citizens will only be considered for this role.Due to the nature of the work, a United States Government Clearance is required to be eligible for the position **

Job Title: 80728 - Embedded Software Engineer - TX - HWIL - SecretJob Location: Grand Prairie TX 75265Onsite Requirements:Embedded C++Hardware testingActive Secret ClearanceJob Description: Designs develops, operates and maintains software and firmware components and computing systems software to be applied to and integrated with engineering scientific and manufacturing requirements.Applies the appropriate standards processes procedures and tools throughout the system development life cycle to support the generation of such engineering applications and produces such as laboratory simulations systems airplane flight control and display systems avionics mechanical and electrical systems weapons armament commercial and military aircraft systems mobile and ground-based defense systems space systems and other systems and applications of this nature.Interfaces with customers suppliers' application users and other technical and support personnel.The software engineer will be responsible for developing and maintaining the real-time simulation code, user interface code, device driver code, data collection code and display code.Responsibilities will include operations and software development from requirement analysis to integration in a prototype environment.This role is established to identify and resolve software engineering related issues to ensure that the software under test is designed and developed to achieve overall product objectives and program requirements. Required skills:Active Secret Clearance required to start.Full-time onsite workExperience in real-time software generation, with hands-on experience related to hardware testing and/orembedded systems and/or a simulation system is required.Experience with C and C++ (11 or higher) programming languages in a Real-Time OperatingSystem or Linuxenvironment is requiredPrior experience with Hardware-in-the-loop (HWIL) systems (Hardware & Software Integration and testing)Simulation (performance real-time) software developmentLow level device drivers/firmware experience Desired skills:Full software lifecycle development exposureCross-discipline team collaboration/exposureGit - source code versioningGitLab - software configuration/version control & CI/CD hostFPGA code and software interfaceHardware-in-loop (HWIL) development - extensive (Closed-loop development)Hardware-in-loop (HWIL) testing - extensiveJira - issue tracking and Agile project managementPythonSoftware to FPGA integrationAutomated unit testing/integration testingGoogle Test

Job Title: 80692 - Embedded Software EngineerJob Location: Lexington MA 02420Onsite Requirements:GMTI and SAR radar modesAir Force Open ArchitectureC++Job Description: The effort includes the design, development, test, and integration of prototype open architecture radar processors and modes.Core job functions include:Development of a prototype radar sensor manager to perform radar frontend interfacing, frontend scheduling, processor resource scheduling, command and control interfacing, mode management, and other generic processing services.Development of radar modes including SAR, Tracking, and GMTI.Development of frontend / backend radar interfaces including command and control, and I/Q data acquisition Required Skills:A detailed understanding of the Air Force's Open Architecture modelExperience with current industry mode development kits and sensor managers5+ years of experience in both GMTI and SAR mode development using current industry mode development kitsProficient in current industry standard communication and computation middleware solutionsRealTime Software/HardwareSoftware DocumentationC/C++ ProgrammingC++11 or later, Stand Template Library, Boost libraryEmbedded SoftwareObject Oriented Software Design and DevelopmentScripting Languages: Perl, Python, Shell Scripting, PowerShellSoftware Design/DevelopmentMultithreaded and Multiprocessor ApplicationsSoftware Testing Preferred Skills:In depth knowledge of existing USAF ISR radar processorsQualificationAssessmentMust HaveHardwareReal-Time Software/Hardware15 yearsProgram/Project Management OR AnalysisSoftware Documentation15 yearsProgrammingC/C++ Programming15 yearsC++11 or later, Stand Template Library, Boost library15 yearsEmbedded Software15 yearsObject Oriented Software Design and Development15 yearsScripting Languages: Perl, Python, Shell Scripting, PowerShell.15 yearsSoftware Design/Development15 yearsSoftwareMultithreaded and Multiprocessor Applications15 yearsTestingSoftware Testing15 years** 3rd party and subcontract staffing agencies are not eligible for partnership in this position. 3rd party subcontractors need not apply. This position requires candidates to be eligible to work in the United States, directly for an employer, without sponsorship now or anytime in the future.This client is a US Federal Government contractor and is legally required to hire US Citizens. US Citizens will only be considered for this role.Due to the nature of the work, a United States Government Clearance is required to be eligible for the position **

Job Title: 80800 - Top Secret Software EngineerJob Location: Hunt Valley MD 21030-0126Onsite Requirements:BS degree in Computer Science or Computer Engineering, or related field with 2+ years of related experience.Skilled at Software Development using C++, Object Oriented Design, and using Design Patterns.Familiarity with Database Design (SQL), Coding Standards, and the Software Development Lifecycle.Job Description: Software Engineers design, code, and maintain applications in various software languages.The candidate provides solutions to a variety of technical problems of moderate scope and complexity.The candidate will develop, enhance, and maintain software code as assigned and will contribute to the completion of specific programs and projects.Responsibilities: Solving problems which are varied may be related to multiple issues and may not be clear.If no precedent exists, complex problems may require research and analysis of alternatives involving many factors.May independently determine and develop approach to solutions.Designs, codes, and maintains applications in various software languages under little supervision.Embedded programming (C/C++)Graphical User Interface programming (C++).Writing interface control documents, specifications and test procedures for your designs is expected.Qualifications:BS degree in Computer Science or Computer Engineering, or related field with 2+ years of related experience.Skilled at Software Development using C++, Object Oriented Design, and using Design Patterns.Familiarity with Database Design (SQL), Coding Standards, and the Software Development Lifecycle.Ability to work independently, learn new tasks/handle multiple tasks, solve problems, meet deadlines, and show strong self-motivation and initiative.Proficient with Visual Studio 2010 and later.CSSP & Security+ preferredCandidate must have Top Secret clearance with the ability to obtain a TS/SCI clearanceYou will be part of a highly skilled team and need to interface with other team members, including those of other engineering disciplines.Additional job duties could include systems level requirements analysis, design, and proposal input.You may also be involved in system testing for products you're a part of and aid with fielding and/or training of the customer.** 3rd party and subcontract staffing agencies are not eligible for partnership on this position. 3rd party subcontractors need not apply. This position requires candidates to be eligible to work in the United States, directly for an employer, without sponsorship now or anytime in the future.This client is a US Federal Government contractor and is legally required to hire US Citizens. US Citizens will only be considered for this role.Due to the nature of the work, a United States Government Clearance is required to be eligible for the position **

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