SOLUTION: Suppose you are working with a data set that is normally distributed with a mean of 400 and a standard deviation of 20. Determine the value of x such that 60% of the values are gre
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Question 674424: Suppose you are working with a data set that is normally distributed with a mean of 400 and a standard deviation of 20. Determine the value of x such that 60% of the values are greater than x. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Suppose you are working with a data set that is normally distributed with a mean of 400 and a standard deviation of 20. Determine the value of x such that 60% of the values are greater than x.
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Find the z-value with a left tail of 0.40
invNorm(0.40) = -0.2533
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Find the corresponding x-value using x = z*s + u
x = -0.2533*20 + 400 = 394.93
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Cheers,
Stan H.
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