Prepare for and practice interview questions from Bell Flight.

Bell Flight Interview Questions

A/B Testing

Algorithms

Analytics

Machine Learning

Probability

Product Metrics

Python

Statistics

Bell Flight Interview Guides

Let’s say we manage a factory where the current manual production line employs 50 workers, and we have the option to upgrade to a robotic system that can produce parts at 3 times the current rate.

How would you approach deciding between upgrading to robotics or keeping the manual line, if our goals are to minimize total production time while also maintaining high employee satisfaction?

How would you balance production speed and employee satisfaction when considering a switch to robotics?

Robotics Upgrade Tradeoff

Supply Chain

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?

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?

Question	Topic	Difficulty	Ask Chance
Robotics Upgrade Tradeoff	Supply Chain	Medium	Very High
Boarding Times Bias	Statistics	Medium	Low
Hundreds of Hypotheses	Statistics	Medium	Low