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(Hypothetical) In a major national survey of crime victimization, the researchers found that 17.0% of Americans...

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Basic Math

(Hypothetical) In a major national survey of crimevictimization, the researchers found that 17.0% of Americans age 12or older had been a victim of crime. The size of the sample was6,4,00.

a) Estimate the percentage of Americans age 12 or older who werevictims at the 95% confidence level. Write a sentence explainingthe meaning of this confidence interval.

b) Estimate the percentage of victims at the 99% confidencelevel. Write a sentence explaining the meaning of this confidenceinterval.

Imagine that the Sample size was cut in half to 3,200, but thesurvey found the same value of 17.0% for the percentage ofvictims.

c) Would the 95% confidence interval increase or decrease? Byhow much?

d) Would the 99% confidence interval increase or decrease? Byhow much?

Answer & Explanation Solved by verified expert
4.2 Ratings (555 Votes)
a Therefore based on    See Answer
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