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he lengths of pregnancies in a small rural village are normally distributed with a mean of...

he lengths of pregnancies in a small rural village are normally distributed with a mean of 265 days and a standard deviation of 17 days. A distribution of values is normal with a mean of 265 and a standard deviation of 17.

What percentage of pregnancies last beyond 309 days?
P(X > 309 days) =    %

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