Use 68-95-99.7 Rule. The mean income per household in a certain state is $ 9500 with a standard deviation of $ 1750. The middle 95% of incomes are between what two values? $5422 and $13,578 $ 6000 and $13,000 $6070 and $12,930 $7260 and $11,740 $ 6621 and $12,378
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The mean income per household in a certain state is $9,500 with a standard deviation of $1,750. The middle 95% of incomes are between what two values? $5,422 and $13,578 $6,000 and $13,000 $6,070 and $12,930 $7,260 and $11,740 $6,621 and $12,378
Joanna Q.
Assume the given distributions are roughly normal. The mean income per household in a certain state is $\$ 9500$ with a standard deviation of $\$ 1750 .$ The middle $95 \%$ of incomes are between what two values? (A) $9500 \pm 1.645(1750)$ (B) $9500 \pm 1.96(1750)$ (C) $9500 \pm 1.645\left(\frac{1750}{2}\right)$ (D) $9500 \pm \frac{1750}{1.645}$ (E) $9500 \pm \frac{1750}{1.96}$
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In the 2000 census conducted by the U.S. Census Bureau, two average household incomes were reported: $\$ 41,349$ and $\$ 55,263 .$ One of these averages is the mean and the other is the median. Which is the mean? Support your answer.
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