5 A lab wants to compare the results for two separate weight loss programs Compute the test statistic given that a random sample of 54 dieters on Program 1 lost an average of 9 3 pounds with a population standard deviation of 3 1 pounds and a random sample of 48 dieters on Program 2 lost and average of 7 9 pounds with a population standard deviation of 2 8 pounds Test at the 95 confidence level x 0 05 whether there s a difference in the pounds lost between the two diets The null and alternative hypotheses a Compute the test statistic z score Ho M b What is the p value for the test statistic HA M1 M