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 98% confident that the true mean is within 3 ounces of the sample mean? The population standard deviation of the birth weights is known to be 6 ounces. O A. 5 OB. 21 Ос. 22 O D. 4

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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 98% confident that the true mean is within 3 ounces of the sample mean? The
population standard deviation of the birth weights is known to be 6 ounces.
O A. 5
ОВ. 21
OC. 22
O D. 4
?.
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Transcribed Image Text: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 98% confident that the true mean is within 3 ounces of the sample mean? The population standard deviation of the birth weights is known to be 6 ounces. O A. 5 ОВ. 21 OC. 22 O D. 4 ?. Click to select your answer. 1:00 PM a 40 D . 20 P Type here to search 31 4/18/2021 delete 144 ho A insert prt sc & 7 %23 8. home 4. 6. 9. backspace %3D 2. Pg up T. Y U P tab D F J K enter pg dn caps lock pause * shift V Σ B. R
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