Mathematics, 17.07.2019 05:20 supchef
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. $205 and $220
b. $85 and $105
c. $100 and $200
d. $110 and $190
Answers: 1
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