participants agree to take the nutritional supplement. To assess its effect on body weight, weights are measured before starting the supplementation and then after 6 weeks. The data are shown below. Is there a significant increase in body weight following supplementation?
Use a paired t-test at a 5% level of significance.
2. Critical Value=
3. Computed statistic=
4. Based on comparing the computed statistic to the critical value which of the following
is (are) true? (4 points)
a. There is significant evidence, alpha=0.05, to show that body weight increased
b. There is not significant evidence, alpha=0.05, to show that body weight increased
c. Statistically speaking the difference in initial weights and weights after 6 weeks is 0.
d. b and c
Subject Initial Weight Weight after 6 Weeks
1 155 157
2 142 145
3 176 180
4 180 175
5 210 209
6 125 126
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