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?
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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