SOLUTION: Suppose the monthly charge for cell phone plans is normally distributed with a mean of $62 and a standard deviation of $18.
1. What percent of the cell plans would be above two st
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Question 665554: Suppose the monthly charge for cell phone plans is normally distributed with a mean of $62 and a standard deviation of $18.
1. What percent of the cell plans would be above two standard deviations above the mean?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Suppose the monthly charge for cell phone plans is normally distributed with a mean of $62 and a standard deviation of $18.
1. What percent of the cell plans would be above two standard deviations above the mean?
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Note: That percent does not depend on the value of the mean or the value
of the standard deviation. It is always the percent of the distribution
above z = 2
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P(z > 2) = normalcdf(2,100) = 0.0228
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Cheers,
Stan H.
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