What Sample Size Is Needed to Obtain a 90 Percent

question 25

Multiple Choice

What sample size is needed to obtain a 90 percent confidence interval for the mean protein content of meat if the estimate is to be within 2 pounds of the true mean value? Assume that the variance is 49 pounds.

• A) 34
• B) 1625
• C) 21
• D) 987

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