The lengths of pregnancies in a small rural village are normally distributed with a mean of 265 days and a standard deviation of 13 days. A distribution of values is normal with a mean of 265 and a standard deviation of 13. What percentage of pregnancies last beyond 285 days? P(X > 285 days) = % 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.

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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The lengths of pregnancies in a small rural village are normally distributed with a mean of 265 days and a standard deviation of 13 days. A distribution of values is normal with a mean of 265 and a standard deviation of 13.

What percentage of pregnancies last beyond 285 days?
P(X > 285 days) = %

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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