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Suppose that the mean cranial capacity for men is 1010 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 95% of men have cranial capacities between [ cc and cc. (b) Approximately ? of men have cranial capacities between 710 cc and 1310 cc. 68% 75% 95% 99.7% X