SOLUTION: A normal distribution has a mean of 80 and a standard deviation of 14. Determine the value above which 80 percent of the values will occur.
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Question 345319: A normal distribution has a mean of 80 and a standard deviation of 14. Determine the value above which 80 percent of the values will occur.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A normal distribution has a mean of 80 and a standard deviation of 14. Determine the value above which 80 percent of the values will occur.
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Find the z-value associated with a right tail of 80%
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invNorm(0.8) = 0.8416
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Find the corresponding raw-score value using x = zs+u
x = 0.8416*14+80 = 91.78
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Cheers,
Stan H.
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