Assume that females have pulse rates that are normally distributed with a mean of p = 72.0 beats per minute and astendard deviation of a = 12.5 beats per minute. Complete parts (a) through (c) below. _ , _a. if 1 adult female is randomly selected. nd the probability that her pulse rate is less than 76 beats per minute. The probability is [1. (Round to tour decimal places as needed.) h. It 25 adult females are randomly selected, nd the probability that they have pulse rates with a mean less than 76 beats per minute. The probability is E]. (Round to four decimal places as needed.) ' c. Why can the normal distribution be used in part (b), even though the sample size does not exceed 30? O A. Since the mean pulse rate exceeds 30, the distribution of sample means is a normal distribution for any sample size. 0 B. Since the distribution is oi sample means. not individuals. the distribution is a normai distribution for any sample size. 0 G. Since the distribution ls of individuals, not sample means, the distribution is a normal distribution for any sample size. 0 D. Since the original population has a normal distribution. the distribution of sample means is a norrnai distribution for any sample size