You Plan to Build a 95% Confidence Interval Estimate of the Mean

question 80

Multiple Choice

You plan to build a 95% confidence interval estimate of the mean of a large population.You want a margin of error no larger than +10.You estimate the population standard deviation to be 200.How large a sample is needed?

• A)1472
• B)1786
• C)1503
• D)1537
• E)1688

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