(Answered) Dr myers mr murray and mr tremblay have always maintained

Finance

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.

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