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 Select one: a. H0: ? < 85 Ha: ? ? 85. b. H0: ? ? 85 Ha: ? > 85. c. H0: ? ? 85 Ha: ? < 85. d. H0: ? > 85 Ha: ? ? 85.
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In this case, the student believes that the average statistics is at least 85, so the null hypothesis would be that the average is not greater than or equal to 85. Therefore, the null hypothesis is: \[H_0: \mu < 85\] Show more…
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