The length of human pregnancies is approximately normal with mean ? = 266 days and standard deviation ? = 16 days. What is the probability that a random sample of 49 pregnancies has a mean gestation period of 262 days or less? The probability that the mean of a random sample of 49 pregnancies is less than 262 days is approximately (Round to four decimal places as needed.)
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The mean gestation period in days for a random sample of 49 pregnancies is 266.8 days. Show more…
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