The mean height of women in a country (ages 20minus29) is 64.2 inches. A random sample of 75 women in this age group is selected. What is the probability that the mean height for the sample is greater than 65 inches? Assume sigmaequals2.84. The probability that the mean height for the sample is greater than 65 inches is nothing.

And we can find the probability using the complement rule and with the normal standard table like this:

The probability that the mean height for the sample is greater than 65 inches is 0.007

Step-by-step explanation:

Let X the random variable that represent the women heights of a population, and we know the following parameters

and

We are interested on this probability

Since the sample size selected is 75>30 we can use the centrel limit theorem and the appropiate formula to use would be the z score given by:

If we find the z score for 65 inches we got:

And we can find the probability using the complement rule and with the normal standard table like this:

The probability that the mean height for the sample is greater than 65 inches is 0.007

a is the right answer