The average heart rate for adults is 72 bpm with a standard deviation of 6bpm. The distribution of heart rates is Normal. a. What is the probability that a randomly selected heart rate is less than 60...

The average heart rate for adults is 72 bpm with a standard deviation of 6bpm. The distribution of heart rates is Normal.

a. What is the probability that a randomly selected heart rate is less than 60 bpm?

b. What is the probability that a randomly selected heart rate is between 70 and 80 bpm?