What percent of pregnancies last over days

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The length of a human pregnancy has a mean of 267 days and a standard deviatin of 16 days. Assume a normal distribution. a) what percent of pregnancies last over 283 days, and b) what percent of pregnancies last over 251 days.

Reference no: EM13122849

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What percent of pregnancies last over days : The length of a human pregnancy has a mean of 267 days and a standard deviatin of 16 days. Assume a normal distribution. What percent of pregnancies last over 283 days.

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