What is the probability that a random sample of 42 pregnancies has a mean gestation period of 161 days or less?
The probability that the mean of a a random sample of 42 pregnancies is less than 161 days is approximately
What is the probability that a random sample of 42 pregnancies has a mean gestation period of 161 days or less?
The probability that the mean of a a random sample of 42 pregnancies is less than 161 days is approximately
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