Heights Of 10-year old boys, Weve established that heights of 10-year old boys vary according to Normal distribution with =138 centimeters and = 7 centimeters (a) What proportions of this population is less than 150 centimeters tall?(b) What proportion is less than 140 centimeters in height?( c) What proportion is between 150 and 140 centimetersProblem 2: Determine if the distribution of age is close to a Normal distribution using SPSS.