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Question According to a research study, college athletes slept8 hours each night last year, on average.
According to a research study, college athletes slept 8
hours each night last year, on average. A random sample of 20
college athletes was surveyed and the mean amount of time per night each athlete slept was 8.4
. This data has a sample standard deviation of 0.9
. (Assume that the scores are normally distributed.)
Researchers conduct a one-mean hypothesis test at the 1%
significance level, to test if the mean amount of time college athletes sleep per night is greater than the mean amount of time last year.
, which is a right-tailed test.
(b) Determine the test statistic, rounded to two decimal places.
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