Question

The average student loan debt for college graduates is $25,350. Suppose that that distribution is normal and that the standard deviation is $14,450. Let X = the student loan debt of a randomly selected college graduate. Round all probabilities to 4 decimal places and all dollar answers to the nearest dollar.

a. What is the distribution of X? X ~ N(,)

b Find the probability that the college graduate has between $12,500 and $26,700 in student loan debt.

c. The middle 20% of college graduates' loan debt lies between what two numbers?
     Low: $
     High: $

I know how to figure out A and B. I am getting stuck on C. Try to explain in as many steps as possible or how to do it on a calculator. My teacher allows us to use a calculator but I can't figure out how to do Problem C on there. Thanks

Answer 1