For the normal distribution described in Exercise 7.11, what first-mortgage amount would have been exceeded by only

Question:

For the normal described in Exercise 7.11, what first-mortgage amount would have been exceeded by only 5% of the mortgage customers?
In exercise
Assuming a normal and a standard deviation of σ = $30,000, what proportion of the mortgages were Source: Bureau of the Census, Statistical Abstract of the United States 2009, p. 726.
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...