A Particular Personal Trainer Works Primarily with Track and Field

Multiple Choice

A particular personal trainer works primarily with track and field athletes. She believes that her clients run faster after going through her program for six weeks. How might she test that claim?

A) A hypothesis test for p₁ - p₂.
B) A hypothesis test for μ₁ - μ₂.
C) A matched-pairs hypothesis test for μ_D.
D) We are unable to conduct a hypothesis test because the samples would not be independent.