Two different teaching procedures were used on two different groups of students. Each group contained 100...

Two different teaching procedures were used on two different groups of students. Each group contained 100 students of about the same ability. At the end of the term, an evaluating team assigned a letter grade to each student. The results were tabulated as follows:

Grade Group

A B C D F Total

Total (I) 15 22 32 17 14 100

(II) 9 16 29 28 18 100

If we consider this data to be comprised of independent observations, test at the 5 percent significance level the hypothesis that the two teaching procedures are equally effective.

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orchestra answered 10 months ago

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