SOLUTION: 1) Find the​ z-score such that the area under the standard normal curve to the left is 0.86 2)Find the​ z-scores that separate the middle 83​% of the distribu

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Question 1070681: 1) Find the​ z-score such that the area under the standard normal curve to the left is 0.86
2)Find the​ z-scores that separate the middle 83​% of the distribution from the area in the tails of the standard normal distribution.
Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!
Using EXCEL's NORMSINV,

.
.
.
Using symmetry,

Half goes to the right hand side and half goes to the left.
So find z such that
Using EXCEL's NORMSINV,

Using symmetry,
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