Recently the United States Department of Agriculture issued a report (http://www.cnpp.usda.gov/sites/default/file/CostofFoodMar2015.pdf) indicating a family of four spent

Question:

Recently the United States Department of Agriculture issued a report (http://www.cnpp.usda.gov/sites/default/file/CostofFoodMar2015.pdf) indicating a family of four spent an average of about $890 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 $430 but less than $890 per month on food?

b. What percent of the families spend less than $830 per month on food?

c. What percent spend between $830 and $1,000 per month on food?

d. What percent spend between $900 and $1,000 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...

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