Suppose that the mean cranial capacity for men is 1050 cc (cubic centimeters) and that the standard deviation is 300 cc. Assuming that men's cranial capacities are normally distributed, complete the following statements. (a) Approximately ? v of men have cranial capacities between 450 cc and 1650 cc. (b) Approximately 99.7% of men have cranial capacities between cc and ] cc. X 5