Suppose that a group of 10 people join a weight loss program for 3 months. Each person's weight is recorded at the beginning and at the end of the 3-month program. To test whether the weight loss program is effective, the data should be treated as:
A) independent samples using the normal distribution.
B) paired samples using the t-distribution.
C) independent samples using the t-distribution.
D) independent proportions.

Question

Quizplus · Accepted Answer

The data should be treated as paired samples using the t-distribution because each person's weight before and after the program is paired, and the comparison is made on the same individuals over time to see if there is a significant change in their weights.

Suppose That a Group of 10 People Join a Weight