Family size 1 2 3 4 6. 7 Proportion 0.28 0.35 0.15 0.13 0.06 0.02 0.01 Note: In this table, 7 actually represents households of size 7 or greater. But for purposes of this exercise, assume that it neans only households of size exactly 7. uppose you take a random sample of 4000 American households. About how many of these households will be of size 2? Sizes to 7? he number of households of size 2 is about he number of households of size 3 to 7 is about

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A:

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A: It is given that  Margin of error, E = 2.5% = 0.025 Confidence level = 90%

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A: a)

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A: Solution

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Q: 2: The median age of the children is: 29 30.5 28.5 28

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Q: Assume that nothing is known about the percentage of passengers who prefer aisle seats. n= (Round up…

A: It is given asMargin of error, E = 1.5% = 0.015Confidence level = 99%

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