The lengths of pregnancies in a small rural village are normally distributed with a mean of 269 days and a standard deviation of 13 days. A distribution of values is normal with a mean of 269 and a standard deviation of 13. What percentage of pregnancies last fewer than 230 days? P(X < 230 days) = %3D Enter your answer as a percent accurate to 1 decimal place (do not enter the "%" sign). Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.

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