Random sample of former statistics students

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Dr Myers, Mr. Murray and Mr. Tremblay have always maintained that they give the same proportion of A grades in their statistics courses. An enterprising student wishes to test this assertion and proceeds to take a random sample of former statistics students. The results are shown below:

Professor          Dr. Myers         Mr. Murray        Mr. Tremblay

A Grades                30                     22                    18

Non A Grades        170                    78                     82

At an alpha level of 0.01 test the contention that the proportion of A grades are the same for the three professors.

Reference no: EM131860392

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