The credit scores of 35yearolds applying for a mortgage at U

The credit scores of 35-year-olds applying for a mortgage at Ulysses Mortgage Associates are normally distributed with a mean of 520 and a standard deviation of 100.

Find the credit score that defines the upper 10 percent. (Use Excel or Appendix C for calculation of z-value. Round your final answer to 2 decimal places.)

Sixty-five percent of the customers will have a credit score higher than what value? (Use Excel or Appendix C for calculation of z-value. Round your final answer to 2 decimal places.)

Within what range would the middle 70 percent of credit scores lie? (Use Excel or Appendix C for calculation of z-value. Round your final answer to 2 decimal places.)

Solution