The length of human pregnancies is approximately normal distributed with mean =266 days and Standard Deviation...

The length of human pregnancies is approximately normal distributed with mean =266 days and Standard Deviation = 16 days ( 20 points ) . Exercise 8.1 What is the probability a randomly selected pregnancy lasts less than 260 days? Suppose a random sample of 20 pregnancies is obtained. Describe the sample distribution the sampling distribution of sample mean of human pregnancies. What is the probability that a random sample of 20 pregnancies has a mean gestation period of 260 days or less? What is probability that a random sample of 50 pregnancies has a mean gestation period of 260 days or less? What is the probability a random sample of size 15 will have a mean gestation period within 10 days of the mean?

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orchestra answered 1 year ago

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