To learn the effectiveness of an exercise regimen, a physical therapist randomly selects 10 women to participate in a study. She measures their waistlines before a rigorous exercise program and 8 weeks after the program begins and obtains the following data:

Waistline Before23.518.521.5242519.753536.55230

Waistline After19.7519.2521.7522.52519.534.253551.531

At the 0.05 level of significance, is there enough evidence to show that the waistline decreased after the rigorous exercise program? Use any method.

P - Parameter Statement

H - Hypotheses

A - Assumptions & Conditions

N - Name the Test

T - Test Statistic

O - Obtain the P-Value

M - Make a Decision about the Null Hypothesis

S - State Your Conclusion About the Claim