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The length of human pregnancies from conception to birth varies according to a distribution that is approximately normal with a mean of 266 days and

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The length of human pregnancies from conception to birth varies according to a distribution that is approximately normal with a mean of 266 days and standard deviation of 16 days. What is the probability that the average pregnancy length for 6 randomly chosen women exceeds 270 days? ..... O A. 0.270 O B. 0.401 O C. 0.599 O D. 0.067

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