Diet A was given to a group of 10 overweight boys between the ages of 8 and 10. Diet B was given to another independent group of 8 similar overweight boys. The weight loss is given in the table below....

Diet A was given to a group of 10 overweight boys between the ages of 8 and 10. Diet B was given to another independent group of 8 similar overweight boys. The weight loss is given in the table below. Using WMW test, test the hypothesis that the diets are of comparable effectiveness against the two-sided alternative. Use a = 5% and normal approximat ion.