Hypothesis Testing: Average Grade on a Final Examination

A student believes that the average grade on the final examination in statistics is at least 85. She plans on taking a sample to test her belief. The correct set of hypotheses is:

a) H0: m < 85 Ha: m 85
b) H0: m 85 Ha: m > 85
c) H0: m 85 Ha: m < 85
d) H0: m > 85 Ha: m 85

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