Assume that females have pulse rates that are normally distributed with a mean of mu equals 76.0 beats per minute and a standard deviation of sigma equals 12.5 beats per minute. if 4 adult females are randomly​ selected, find the probability that they have pulse rates with a mean less than 83 beats per minute.

Solution: We are given that females have pulse rates that are normally distributed with a

We have to find

First we need to determine the z score corresponding to

We know that:

Now, we have to find

Using the standard normal table, we have:

Therefore, if 4 adult females are randomly selected the probability that they have pulse rates with a mean less than 83 beats per minute is 0.8686

step-by-step explanation:

i have done this all on a piece of paper but idk how to put it on here cuz it needs to be drawn