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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?

Let’s say we have a table with an <code>id</code> and <code>name</code> fields. The table holds over 100 million rows and we want to sample a random row in the table without throttling the database.

Write a query to randomly sample a row from this table.

Input:

<code>big_table</code> table

<table>
<thead>
<tr>
<th>Columns</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>id</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>name</code></td>
<td>VARCHAR</td>
</tr>
</tbody>
</table>

Write a query to randomly sample a row from a big table.

Random SQL Sample

Alcatel-Lucent Motive Salaries by Position

Details: Purpose and Scope: The Embedded Software Engineer will primarily be involved with developing new products and supporting the existing products and our production and service teams. They will perform in-lab troubleshooting of complex embedded systems, identifying issues and bugs, and work with the engineering team to address bugs / firmware issues. Job Requirements Details: Responsibilities: <ul><li>Support the transfer of new designs from R&D to production and service.</li><li>Facilitate firmware and software testing as it relates to manufacturing and service operations.</li><li>Debug firmware and related hardware issues to identify root causes (logic probing, measuring voltages, etc.).</li><li>Work with engineering team, manufacturing and service teams on failure analysis and documentation of product defects related to firmware and software issues.</li><li>Work with engineering team on new design improvements based on internal and customer feedback.</li><li>Use issue tracking software (Jira) and version control tools (Git, SVN) to document / retrieve latest product releases.</li><li>All other duties as required.</li></ul> Skills / Other: <ul><li>Outstanding communication skills, both verbal and written, plus presentation skills.</li><li>Multi-tasking.</li><li>Able to work both independently and cooperatively with cross-disciplinary teams.</li><li>Experience in troubleshooting electrical circuits in development of embedded software. </li><li>Knowledgeable of electronic hardware.</li><li>Able to read schematics.</li></ul> Education/ Training: <ul><li>Bachelor's degree in Computer Science or Computer Engineering or Electrical Engineering with Embedded Firmware Experience.</li></ul> Technical Requirements: <ul><li>Strong design experience in C/C++ for embedded applications.</li><li>Experience with chip-to-chip communication protocols or interfaces (I2C, SPI. UART, etc.).</li><li>Experience in various wired communication protocols, such CAN and PLC.</li><li>Experience in various wireless communication protocols, such as WiFi.</li><li>Experience with .NET framework, C# and windows application development is preferred.</li><li>Familiarity with issue tracking software (Jira) and version control tools (Git, SVN).</li><li>Familiar with common laboratory engineering tools, such as logic analyzers, oscilloscopes, power supplies, function generators, digital multi-meters, etc.</li></ul> Experience: <ul><li>3-5 Years of experience in embedded systems development.</li><li>Experience involving microcontrollers using various platforms (microchip and ESP32 platform), strongly preferred.</li></ul> Pay:$110,000 - $140,000/yr

Alcatel-Lucent Motive Interview Questions

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Alcatel-Lucent Motive Interview Questions

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