a-researcher-wants-to-test-if-a-diet-leads-to-weight-loss-the-differences-are-ca

Question

A researcher wants to test if a diet leads to weight loss. The differences are calculated as (before - after). Which set of hypotheses is appropriate?

Accepted Answer

H0: μd = 0; Ha: μd > 0

Answer

H0: μd < 0; Ha: μd > 0

Answer

H0: μd > 0; Ha: μd = 0

Answer

H0: μd = 0; Ha: μd < 0