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In previous​ years, students' tests have been​ 24% A's,​ 30% B's,​ 26% C's,​ 15% D'd, and​...

In previous​ years, students' tests have been​ 24% A's,​ 30% B's,​ 26% C's,​ 15% D'd, and​ 5% F's.

A current test resulted in 10​ A's, 15​ B's, 8​ C's, 7​ D's, and no​ F's.

Is there evidence at the 0.05 level to suggest that the current exam grades differ from the results in previous​ years?

Math   Statistics-And-Probability   
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Answer #1

Ho:  current grades same as the results in previous​ years

H1 :  current grades differ from the results in previous​ years

That is , there is insufficient evidence to conclude that current grades differ from the results in previous​ years.

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