The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. Donna Tupper's daughter was born 5 days before her due date, which in theory was the 263rd day of her pregnancy. If a woman is randomly selected, what is the probability that the length of her pregnancy is less than 263 days?
Syntax Template
normalcdf(lower bound, upper bound, mean, standard deviation)
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