Use the following information to answer question. Ron Moy has taught corporate finance for years, but this is the first year he has included the use of the computer to his course. Actually, one class did not use the computer. A second class had to use the computer. The third class was introduced to the computer but had the option not to use it. The test results that follow are grades on standardized tests and are believed not to follow a normal distribution.

A psychology professor argues that we should not impose any restrictions on the students. Not all students benefit from using the computer. He suggests that the best method is giving the students freedom of choice. Do a 5 percent test comparing class 3 with class 2. Do the data support the psychology professor’s viewpoint?

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Class 1 76 72 69 71 33 67 62 60 59 58 Class 2 KFZ7858 63 81 65 77 80 65 69 Class 3 79 73 68 88 62 86 66 70 78 65