SOLUTION: In this distribution, find the number of kWh that separates the top 55% from the bottom 45%; with a mean of 1050 kWh and and standard deviation of 218 kWh. Thanks :-)

Algebra ->  Probability-and-statistics -> SOLUTION: In this distribution, find the number of kWh that separates the top 55% from the bottom 45%; with a mean of 1050 kWh and and standard deviation of 218 kWh. Thanks :-)      Log On


   



Question 584656: In this distribution, find the number of kWh that separates the top 55% from the bottom 45%; with a mean of 1050 kWh and and standard deviation of 218 kWh.
Thanks :-)

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
In this distribution, find the number of kWh that separates the top 55% from the bottom 45%; with a mean of 1050 kWh and and standard deviation of 218 kWh.
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Find the z-value with a left tail of 45%
invNorm(0.45) = -0.1257
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# of kWh = -0.1257*218 + 1050 = 1022.61 kWh
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Cheers,
Stan H.