The lengths of pregnancies in a small rural village are normally distributed with a mean of 266 days and a standard deviation of 16 days. A distribution of values is normal with a mean of 266 and a standard deviation of 16.

What percentage of pregnancies last fewer than 260 days?

P(X< 260 days) =%

Enter your answer as a percent accurate to 1 decimal place (do not enter the "%" sign). Answers obtained using exactz-scores orz-scores rounded to 3 decimal places are accepted.