A recent report indicated a typical family of four spends $490 per month on food Assume the distribution of food expenditures for a family of four follows the normal distribution, with a standard deviation of $90 per month a What percent of the families spend more than $30 but less than $490 per mo...

A recent report indicated a typical family of four spends $490 per month on food. Assume the

Question:

A recent report indicated a typical family of four spends $490 per month on food. Assume the of food expenditures for a family of four follows the normal with a standard deviation of $90 per month.
a. What percent of the families spend more than $30 but less than $490 per month on food?
b. What percent of the families spend less than $430 per month on food?
c. What percent spend between $430 and $600 per month on food?
d. What percent spend between $500 and $600 per month on food?

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...