Question: A study was conducted to see whether a certain diet medication had an effect on the weights (in pounds) of 8 women. Their weights were taken before and 6 weeks after daily administration of the medication. Data shown here. Significance level=0.05, can one conclude that the medication had an effect (increase or decrease) on the weights of the women?

Subject A B C D E F G H

Weight 187 163 201 158 139 143 198 154

Before

Weight 178 162 188 156 133 150 175 150

After