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 90% confid- mean is within 4 ounces of the sample mean? The population standard deviation of the birth weights is known to be 7 ounces. O A. 8 О В. 2 OC. 9 O D. 3

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A: Here, we can see that the mean life of laptop model is less than 8 mu = 8

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Q: Call: 1m (formula Brth15to17 PovPct, data poverty) Residuals: Min 1Q Median -11.093 -7.252 1.759…

A: Since you have posted a question with multiple subparts, we will provide solution to the first three…