SOLUTION: The lengths of pregnancies in a small rural village are normally distributed with a mean of 270 days and a standard deviation of 12 days. A distribution of values is normal with a

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Question 1020330: The lengths of pregnancies in a small rural village are normally distributed with a mean of 270 days and a standard deviation of 12 days. A distribution of values is normal with a mean of 270 and a standard deviation of 12.
What percentage of pregnancies last fewer than 294 days?
P(X < 294 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.

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Find the z score.
z=%28294-270%29%2F12=24%2F12=2
Find the corresponding probability,
P%282%29=0.97725