The overhead reach distances of adult females are normally distributed with a mean of 202.5 cm and a standard deviation of 7.8 cm. a. Find the probability that an individual distance is greater than 215.00 cm. b. Find the probability that the mean for 15 randomly selected distances is greater than 201.20 cm. c. Why can the normal distribution be used in part (b), even though the sample size does not exceed 30?