luzbalais4991 luzbalais4991

04-06-2023
Mathematics

contestada

Suppose that the average trip time from Oak Park to UIC on the Blue line is 23

minutes and that the standard deviation of the population is 16 minutes (sigma=16). We are interested to know whether the average trip time on Thursdays is shorter. We study a sample of 25 trips on Thursdays and the average is 21. 5 minutes

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