It is often assumed that IQ scores follow a bell-shaped distribution with a mean of 100 and

Question:

It is often assumed that IQ scores follow a bell-shaped with a mean of 100 and a standard deviation of 16.
a. What percentage of scores are between 84 and 116?
b. What percentage of scores are less than 68?
c. What percentage of scores are more than 116?

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...