The average American gets a haircut every 40 days. Is the average smaller for college students? The data includes the results of a survey of 15 college students asking them how many days elapse between haircuts. Assume that the distribution of the population is normal. Suppose that you are given the test statistic: t = -3.58. Answer the following questions:
We should conduct a test.
The p-value = (Please show your answer to 3 decimal places.)
Hint:
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