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Mathematics, 04.12.2019 07:31 quincytonia

The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days.

a) find the probability of a pregnancy lasting 308 days or longer.
b) if the length of pregnancy is in the lowest 22? %, then the baby is premature.

find the length that separates premature babies from those who are not premature.

a) the probability that a pregnancy will last 308 days or longer is?
b) babies who are born on or before days are considered premature

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