A Student Believes That the Average Grade on the Final $\mu$

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: $\mu$ < 85 H_a: $\mu$ $\geq$ 85.
B) H₀: $\mu$ $\leq$ 85 H_a: $\mu$ > 85.
C) H₀: $\mu$ $\geq$ 85 H_a: $\mu$ < 85.
D) H₀: $\mu$ > 85 H_a: $\mu$ $\leq$ 85.

Correct Answer:

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