The lengths of pregnancies in a small rural village are normally distributed with a mean of 270 days and a standard deviation of 17 days. A distribution of values is normal with a mean of 270 and a standard deviation of 17. What percentage of pregnancies last fewer than 256 days? P(X 2280) = 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