Assume that females have pulse rates that are normally distributed with a mean of

75.0 beats per minute and a standard deviation of 12.5 beats per minute.

a. If 1 adult female is randomly selected, find the probability that her pulse rate is between 6969 beats per minute.

An elevator has a placard stating that the maximum capacity is 204012 passengers. So, 12 adult male passengers can have a mean weight of up to 2040 divided by 12 equals 170 pounds. If the elevator is loaded with 12 adult male passengers, find the probability that it is overloaded because they have a mean weight greater than 170lb. (Assume that weights of males are normally distributed with a mean of 180 lb and a standard deviation of 30 lb. ) Does this elevator appear to be safe?

The probability the elevator is overloaded is