The proponents of a diet plan claim that the mean amount of weight lost in the first three weeks of following the plan is at least 10 pounds A consumer advocacy group is skeptical and measures the beginning and ending weights for a random sample of 20 people who follow the plan for 3 weeks. The mean and standard deviation for the difference in weight at the two times are 8 pounds and 4 pounds, respectively.

A) To check the claim made by the proponents of the diet plan under appropriate assumptions, what is the value of the test statistic?

B)To check the claim made by the proponents of the diet plan under appropriate assumptions, what is the p-value of the test?