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 C)H₀: $\mu$ $\ge$ 85 H_a: $\mu$

Question

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.

Quizplus · Accepted Answer

The null hypothesis (H0) should reflect the student's belief that the average grade is at least 85, so H0: $\mu$ $\ge$ 85. The alternative hypothesis (Ha) is the opposite, H_a: $\mu$ < 85.

A Student Believes That the Average Grade on the Final μ\muμ

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