Information from the Department of Motor Vehicles indicates that the average age of licensed drivers is 45 7 years with a standard deviation of 12 5 years Assuming that the distribution of drivers ages is approximately normal, a What proportion of licensed drivers are older than 50 years old b What...

Information from the Department of Motor Vehicles indicates that the average age of licensed drivers is

Question:

Information from the Department of Motor Vehicles indicates that the average age of licensed drivers is μ = 45.7 years with a standard deviation of σ = 12.5 years. Assuming that the of drivers’ ages is approximately normal,
a. What proportion of licensed drivers are older than 50 years old?
b. What proportion of licensed drivers are younger than 30 years old?
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...