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18 Nov 2021
Given information
Two coworkers commute from the same building. They are interested in whether or not there is any variation in the time it takes them to drive to work. They each record their times for commutes. The first worker’s times have a variance of . The second worker’s times have a variance of . The first worker thinks that he is more consistent with his commute times and that his commute time is shorter.
Level of significance .
Step-by-step explanation
Step 1.
Standard deviation is a measure of dispersion. It calculated as the square root of the variance.
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