Use the following information to answer the next 2 questions: Suppose that a sample of 15 randomly chosen people were put on a special weight loss diet. The amount of weight lost, in pounds, follows an unknown distribution with mean equal to 12 pounds and standard deviation equal to three pounds. Assume that the distribution for the weight loss is normal.

Find the 90th percentile for the mean amount of weight lost by 15 people.

Is using (%/100)(u+1) correct for u is 12 or use n=15