Question

1)Assume that females have pulse rates that are normally distributed with a mean of mu equals 73.0μ=73.0 beats per minute and a standard deviation of

sigma equals 12.5σ=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 less than 8080 beats per minute.The probability is _____

2) The overhead reach distances of adult females are normally distributed with a mean of 195 cm195 cm and a standard deviation of 8.3 cm8.3 cm.

a. Find the probability that an individual distance is greater than 205.00205.00 cm.

b. Find the probability that the mean for 1515 randomly selected distances is greater than 193.20 cm.193.20 cm

c. Why can the normal distribution be used in part​ (b), even though the sample size does not exceed​ 30?

Answer 1