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# The length of human pregnancies is approx. normally distributed (ND) with mean of 266 days and standard deviation of 16 days.

. The length of human pregnancies is approx. normally distributed (ND) with mean of 266 days and standard deviation of 16 days. Find the probability that a pregnancy will

(a) last more than 300 days;

(b) less than 240 days;

(c) between 250 and 282 days.