The lengths of pregnancies are normally distributed with a mean of 266 days and a standard deviation of 15 days. a. Find the probability of
The lengths of pregnancies are normally distributed with a mean of 266 days and a standard deviation of 15 days. a. Find the probability of a pregnancy lasting 309 days or longer. b. If the length of pregnancy is in the lowest 4%, then the baby is premature. Find the length that separates premature babies from those who are not premature. Click to View page 1 of the table. Click to view page 2 of the table. a. The probability that a pregnancy will last 309 days or longer is 0.00210 . (Round to four decimal places as needed.) b. Babies who are bom on or before days are considered premature. (Round to the nearest integer as needed.)
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