The Monthly Amounts Spent for Food by Families of Four

Multiple Choice

The monthly amounts spent for food by families of four receiving food stamps approximates a symmetrical, normal distribution. The sample mean is $150 and the standard deviation is $20. Using the Empirical Rule, about 95% of the monthly food expenditures are between what two amounts?

A) $100 and $200
B) $85 and $105
C) $205 and $220
D) $110 and $190