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 greater than 85.To make her case, she will take a sample of scores and test a skeptical null hypothesis.The correct set of hypotheses is

A) H₀: $\mu$ < 85; H_a: $\mu$ ≥ 85
B) H₀: $\mu$ > 85; H_a: $\mu$ ≤ 85
C) H₀: $\mu$ ≤ 85; H_a: $\mu$ > 85
D) H₀: $\mu$ = 85; H_a: $\mu$$\neq$ 85
E) none of the above