Multiple Choice
We want to estimate with 99 percent confidence the percentage of automobile purchasers who are under 30 years of age.A margin of error of 5 percentage points is desired.What sample size is needed? In an earlier sample,we found a 99 percent confidence interval of purchasers under 30 years of age to be [.18,.27].
A) 104
B) 664
C) 392
D) 523
Correct Answer:
Verified
Correct Answer:
Verified
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