For Questions Below, Use the Following: a Random Sample of College

For questions below, use the following: A random sample of college students was selected from the population of male, physical-education majors. The mean height was 68". The mean weight was 150 lbs. The mean waist-measure size was 32". The standard deviations were, for height, 3" for weight, 30 lbs for waist-size, 2" Significant Pearson r's were, Height and weight, .70 Height and waist-size, .40 Weight and waist-size, .30
-Predict the height of a student whose weight was 120 lbs., and who had a waist-size of 29".