SOLUTION: I'm having trouble with this one please help me understand how to calculate this: P(-c ≤ Z ≤ c) = 0.9668

Algebra ->  Probability-and-statistics -> SOLUTION: I'm having trouble with this one please help me understand how to calculate this: P(-c ≤ Z ≤ c) = 0.9668       Log On


   



Question 449306: I'm having trouble with this one please help me understand how to calculate this:
P(-c ≤ Z ≤ c) = 0.9668


Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
I'm having trouble with this one please help me understand how to calculate this:
P(-c ≤ Z ≤ c) = 0.9668
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The probability in the two tails is 1-0.9668 = 0.0332
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The left tail has 0.0332/2 = 0.0166
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Find the z-value with a left tail of 0.0166
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invNorm(0.0166) = -2.1297
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So, c = 2.1297
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Cheers,
Stan H.
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