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

Multiple Choice

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: $\mu$ $\ge$ 85
B) H₀: $\mu$ $\le$ 85 H_a: $\mu$ > 85
C) H₀: $\mu$ $\ge$ 85 H_a: $\mu$ < 85
D) None of the other answers are correct.