SOLUTION: About what% of the area under the curve of the standard normal distribution is between z=−2.527 and z=2.527(or within 2.527 standard deviations of the mean).

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Question 1176360: About what% of the area under the curve of the standard normal distribution is between z=−2.527 and z=2.527(or within 2.527 standard deviations of the mean).
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!

Hi
Normal distribution:
Using TI or similarly an inexpensive Casio fx-115 ES plus:
area under the standard normal distribution curve(continuous) is the same as
the Probability of the given z-score:
 P( |z|≤ -2.527) = 1 - normalcdf(-2.527, 2.527)  = 1-.9885 = .0115
Or P( |z|≤ -2.527) = 2P(z ≤ -2.527
Wish You the Best in your Studies
Shown below is the positioning of |z| = 2.527 on the Standard Normal Curve

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