Question: 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

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 4 minutes (sigma=4). We are interested to know whether the average trip time on Thursdays is shorter. We study a sample of 36 trips on Thursdays and the average is 20 minutes. Execute a hypothesis test at alpha= 1% that the average trip time on Thursdays is shorter (that is, that it requires a smaller number of minutes). State Ho, Ha, calculate the appropriate statistic, p-value, state whether you reject Ho vs. not and state your conclusion in plain English. You must use the p-value method taught in class. If you use the critical value method, then you will receive 0 points for this part of the problem. Show all work. What is the largest number of minutes that will allow you to reject Ho? What is the probability that you will reject Ho if mu is actually 22 minutes?

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