7. The Centers for Disease Control say 32.8% of births (or deliveries) in the USA are by Caesarian. section. (http://www.cdc.gov/nchs/fastats/delivery.htm Find probability that in a randomly chosen sample of 268 births more than 33% are Caesarian births.

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A:

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A:

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A: 6-8= -2

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A: 12+Z= 15 Z = 15 - 12