SOLUTION: If X is normally distributed with a mean of 10 and a standard deviation of 4.2, and we know that P(X

SOLUTION: If X is normally distributed with a mean of 10 and a standard deviation of 4.2, and we know that P(X < c) = 0.7357, find c.

Question 473128: If X is normally distributed with a mean of 10 and a standard deviation of 4.2, and we know that P(X < c) = 0.7357, find c.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
If X is normally distributed with a mean of 10 and a standard deviation of 4.2, and we know that P(X < c) = 0.7357, find c.
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Find the z-value with a left tail of 0.7357
invNorm(0.7357) = 0.6301
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Find the corresponding x-value:
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x = z*s+u
x = 0.6301*4.2+10 = 12.65
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Cheers,
Stan H.
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