Answer:
~ 81.8%
Explanation:
I THINK this is what you want:
Look at the attached normal distribution curve below....add the percentages in the boxed-in region:
Using z-score table : + 2 = .9772
-1 = .1587
.9772 - .1587 = .8185 = 81.85%
0.81
For those (including me) who dont understand, or forgot that 81% is the same as 0.81.
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