Alicia has 80 marbles, Teddy has 110 martxos, and Marty has 60 marbles. Thirty percent of Alicia's marbles are blue, forty percent of Teddy's marbles are blue, and seventy percent
of Marty's marbles are blue. If Alicia, Teddy, and Marty combine all their marbles, what
percentage of the marbles will be blue?

Assume that females have pulse rates that are normally distributed with a mean of mu equals 72.0 beats per minute and a standard deviation of sigma equals 12.5 beats per minute. complete parts (a) through (c) below. a. if 1 adult female is randomly selected, find the probability that her pulse rate is between 65 beats per minute and 79 beats per minute. the probability is? b. if 16 adult females are randomly selected, find the probability that they have pulse rates with a mean between 65 beats per minute and 79 beats per minute. the probability is? c. why can the normal distribution be used in part (b), even though the sample size does not exceed 30?