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In: Statistics and Probability

Read each problem carefully and clearly show all work. Indicate calculator functions used (ie T-Test, 2-SampTTest,...

Read each problem carefully and clearly show all work.

Indicate calculator functions used (ie T-Test, 2-SampTTest, etc) as well as calculator entries

State your conclusions in terms of the context of the problem.

  1. Does the time of day that a class meets affect exam grades? Exam grades for an 8am statistics class and a 3pm statistics class taught by the same professor were compared. The summary data are given in the table below. Assuming both populations are approximately normally distributed, is there a difference between the two classes? Use a significance level of 5%.

  8am Class

3pm Class

    =  23

       = 27

          = 81

       =  85

         =  8.6

       =  11.2

      Clearly label the 6 step approach

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Expert Solution


orchestra answered 2 years ago
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