FORESTRY
AGRICULTURAL STATISTICS AND ECONOMICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A nurse at a local hospital is interested in estimating the birth weight of infants. How large a sample must she select if she desires to be 95% confident that the true mean is within 3 ounces of the sample mean? The standard deviation of the birth weights is known to be 6 ounces.
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3
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4
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16
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15
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Explanation:
Detailed explanation-1: -Therefore, the nurse must select a sample size of 8 infants to be 90% confident that the true mean is within 4 ounces of the sample mean. So, the correct answer is B. 8.
There is 1 question to complete.