In studies dating back over 100 years, it's well established that regression toward the mean occurs between the heights of fathers and the heights of their adult sons. Indicate whether the following statements are true or false. (a) Sons of tall fathers will tend to be shorter than their fathers. (b) Sons of short fathers will tend to be taller than the mean for all sons. (c) Every son of a tall father will be shorter than his father. (d) Taken as a group, adult sons are shorter than their fathers. (e) Fathers of tall sons will tend to be taller than their sons. (f) Fathers of short sons will tend to be taller than their sons but shorter than the mean for all fathers.