# Question: When not interrupted artifi cially the duration of human pregnancies

When not interrupted artifi cially, the duration of human pregnancies can be described, we’ll assume, by a mean of 9 months ( 270 days) and a standard deviation of one- half month ( 15 days).

(a) Between what two times, in days, will a majority of babies arrive?

(b) A small minority of all babies will arrive sooner than ______?

(c) A small minority of all babies will arrive later than ______?

(d) In a paternity suit, the suspected father claims that since he was overseas during the entire 10 months prior to the baby’s birth, he could not possibly be the father. Any comment?

(a) Between what two times, in days, will a majority of babies arrive?

(b) A small minority of all babies will arrive sooner than ______?

(c) A small minority of all babies will arrive later than ______?

(d) In a paternity suit, the suspected father claims that since he was overseas during the entire 10 months prior to the baby’s birth, he could not possibly be the father. Any comment?

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