The average American gets a haircut every 44 days. Is the average smaller for college students? The data includes the re

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The average American gets a haircut every 44 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 and that we know population standard
deviation. Suppose that you are given the test statistic: z = -2.1.
Answer the following questions:
We should conduct a Select an
answer two-tailed left-tailed right-tailed Correct test.
The p-value = (Please show your answer to 4 decimal
places.)