Question

The mean and standard deviation for the heights of men in the U.s are 70 inches and 4 respectively and normally distributed.....

Answer 1

Answer:

12%

Step-by-step explanation:

We are informed that the heights of men in the U.S are normally distributed with a mean of 70 inches and a standard deviation of 4 inches. We need to determine the percent of men whose height falls between 65 and 67 inches. We would first evaluate the probability that the height of a randomly selected individual would fall between 65 and 67 inches;

This can be done in stat-crunch;

Click Stat, highlight on Calculators then click Normal

In the pop-up window that appears click Between

Enter the given values of mean and standard deviation; 70 and 4 respectively

Enter the values 65 and 67 in the next set of boxes in that order

Finally, click on compute;

Stat-Crunch returns a probability of 0.12097758. Therefore, the percent of men whose height falls between 65 and 67 inches is 12.10%. Therefore, the solution is 12%.