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Researchers have claimed that the average number of headaches during a semester of Statistics is 14....

Researchers have claimed that the average number of headaches during a semester of Statistics is 14. Statistics professors dispute this claim vehemently. Statistic professors believe the average is much more than this. They sample n = 13 students and find the sample mean is 16 and the sample standard deviation is 2.0. Suppose they actually test H0: mu = 14 vs. Ha: mu not= 14. The correct conclusion at alpha = 0.001 is:

a. p-value = 0.0011.

b. Accept H0 in favor of Ha.

c. Reject H0 in favor of Ha.

d. Fail to reject H0 in favor of Ha.

Math   Statistics-And-Probability   
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