Suppose that the mean cranial capacity for men is 1190 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 99.7% of men have cranial capacities between ] cc and ] cc. (b) Approximatel v ? of men have cranial capacities between 590 cc and 1790 cc. 68% 75% 95% 99.7% X 5