A researcher wants to show that fewer than 40 of the populat

A researcher wants to show that fewer than 40% of the population exercise regularly. He samples 900 individuals and 342 of them exercise regularly. What are the appropriate hypotheses?

            A.      

Null Hypothesis: p = .40 Alt. Hypothesis: p < .40

            B.      

Null Hypothesis: p = .40 Alt. Hypothesis: p > .40

            C.      

Null Hypothesis: p < .40 Alt. Hypothesis: p = .40

Solution

Answer: A. Null Hypothesis: p = .40 Alt. Hypothesis: p < .40

because we want to test if fewer than 40% of the population exercise regularly.