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Please help me solve!

Please help me solve!-example-1
User Ironv
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1 Answer

4 votes

Answer:

81.5%

Explanation:

Note that 90 is 2 standard deviations away from 144, which accounted for 47.5% area

171 8 is 1 standard deviations away from the mean is which is 34% area.

So the total area is 81.5%

User Fer To
by
3.4k points