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Randomly selected students in a statistics class were asked to report the number of hours they...

  1. Randomly selected students in a statistics class were asked to report the number of hours they slept on weeknights and on weekends. At α = 0.05, the experimenter wants to know if there is sufficient evidence that there is a difference in the mean number of hours slept.

Student                 1          2          3          4          5          6          7          8

Hours

Sun-Thurs           8          5.5       7.5       8          7          6          6          8

Hours                                

Fri-Sat                  4          7          10.5     12        11        9          6          9

a.   State the hypotheses and identify the claim.

b.   A student calculates the test statistic using this formula:

Is this the correct formula to use for this situation? (Hint: it’s not) Explain your answer!

math   Statistics-And-Probability   
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