According to the Federal Highway Administrations 2006 highway statistics, the distribution of ages for licensed drivers has

Question:

According to the Federal Highway Administration’s 2006 highway statistics, the of ages for licensed drivers has a mean of 47.5 years and a standard deviation of 16.6 years [www.fhwa.dot.gov]. Assuming the of ages is normally distributed, what percentage of the drivers are:
a. between the ages of 17 and 22?
b. younger than 25 years of age?
c. older than 21 years of age?
d. between the ages of 48 and 68?
e. older than 75 years of age?
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...