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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

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 chi-square test for independence.

B. A hypothesis test forp1 - p2.

C. An independent samples hypothesis test formu1 - mu2.

D. A matched-pairs hypothesis test forD.

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