Data from the Web site carmax.com compiled in July 2014 show that prices for used Audi A4

Question:

Data from the Web site carmax.com compiled in July 2014 show that prices for used Audi A4 cars advertised on the Web site have a mean of $23,800 and a standard deviation of $4,380. Assume a normal distribution for the price.
a. What percent of used Audi A4s cost more than $25,000?
b. What percent of used Audi A4s cost between $18,000 and $22,000?
c. The least expensive 10% of used Audi A4s offered on the Web site cost at most how much?

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...