A randomized clinical trial is planned to compare an exercise program designed to lower weight to a diet program. Before starting the trial, a pilot study is conducted involving 8 participants. The objective of the study is to assess how weight changes over time untreated. Weights are measured at baseline and again 6 weeks later. Is there a statistically significant difference in weights over time? Run the test at a 5% level of significance.

Baseline 120 145 130 160 152 143 126 150

6 Weeks 122 142 135 158 155 140 130 167

Identify the following:

(a) number of samples (indicate independent or paired, where appropriate)

(b)outcome variable being measured

(c) type of outcome variable

(d) null and research hypothesesand (You may use m for . You may use NE for . You may use a for .)

(e) test statistic (Insert correct letter from below.)