SOLUTION: Can you explain to me how to do this problem? I am very lost here. Find the z-score for the standard normal distribution where: P(-a<z<0) = 0.3980

Algebra ->  Probability-and-statistics -> SOLUTION: Can you explain to me how to do this problem? I am very lost here. Find the z-score for the standard normal distribution where: P(-a<z<0) = 0.3980       Log On


   

Question 509425: Can you explain to me how to do this problem? I am very lost here.

Find the z-score for the standard normal distribution where:
P(-a
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Find the z-score for the standard normal distribution where:
P(-a< z <0) = 0.3980
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Draw the picture on a normal curve so you can see why
these numbers are what they are.
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-a must be a z-value that has a left tail of 0.5000-0.3980 = 0.1020
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That z-value is invNorm(0.1020) = -1.2702
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Cheers,
Stan H.
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