Mathematics, 05.06.2020 21:04, rerik9936

Historically about 51% of the babies born in the United States are boys. That is, we know that p=0.51. A survey plans to study 650 randomly selected newborns. What are the mean and standard deviation of the statistic p hat , the sample proportion who are boys?

Use the Normal approximation to find the probability that p hat would be less than 0.5？

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Historically about 51% of the babies born in the United States are boys. That is, we know that p=0.5...