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1. A recent report in USA Today indicated that a typical family of four spends $620...


1. A recent report in USA Today indicated that a typical family of four spends $620 per month on food. Assume the distribution of food expenditures for a family of four follows the normal distribution, with a standard deviation of $95.

a. What percent of families spend less than $550 per month on food?​
b. What percent of families spend between $550 and $720 per month on food?
  
c. What percent of families spend between $630 and $720 per month on food?
Math   Statistics-And-Probability   
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