Find the following probabilities for X = pulse rates of group of people, for which the mean is 78 and the standard deviation is 4. Assume a normal distribution. (Round all answers to four decimal...

Find the following probabilities forX = pulse rates of group of people, for which the mean is 78 and the standard deviation is 4. Assume a normal distribution. (Round all answers to four decimal places.)

(a)P(X ≤ 75).

(b)P(X ≥ 84).

(c)P(70 ≤X
≤ 88)

Jun 04, 2022