A Sample of the Monthly Amounts Spent for Food by Families

Multiple Choice

A sample of the monthly amounts spent for food by families of four receiving food stamps approximates a symmetrical distribution. The sample mean is $150 and the standard deviation is $20. Using the Empirical Rule, about 95 percent 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