• The average sleep time is supposed to be 8 hours a day (m).
• We think college students sleep a different amount, maybe more - maybe less.
• We survey 10 students to see how much they sleep.
• The data are as follows (each cell represents a student):

Here's the output from a computer package:

Why do you think this data set is not significant?

Answer the following questions about this test.
1). What is the value of the sample mean?
2). The printout refers to a “test value” of 8; what is this in our hypothesis test?
3). What does the “mean difference” of –2.8 refer to?
4). Do we reject or fail to reject the Null Hypothesis? Explain