SOLUTION: the average weight of an airline passenger suitcase is 45 pounds. The standard deviation is 2 pounds. Assuming the variable is normally distributed. If 15% of the suitcases are ove

Question 819971: the average weight of an airline passenger suitcase is 45 pounds. The standard deviation is 2 pounds. Assuming the variable is normally distributed. If 15% of the suitcases are overweight, find the maximum weight X allowed by the airline?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
the average weight of an airline passenger suitcase is 45 pounds. The standard deviation is 2 pounds. Assuming the variable is normally distributed. If 15% of the suitcases are overweight, find the maximum weight X allowed by the airline?
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Find the z-value with a left tail of 0.85.
invNorm(0.85) = 1.0364
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Find the corresponding weight value::
weight = z*s + u
weight = 1.0364*2+45 = 47.07 lbs.
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Cheers,
Stan H.
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