The mean number of hours of sleep for adults in the population of the U.S. is 6.8 with a standard deviation of 0.87. A researcher claims that the mean number of hours that college students get per night is significantly different from adults in the population. The mean number of hours of sleep in a sample of 25 college students is 7.1 hours.

Use the p-value approach to conduct a full hypothesis (all steps - follow the guidance in the last problem) that can be used to determine whether the mean hours of sleep is significantly different than 6.8 hours.. Let=. 05.