(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?
