SOLUTION: An airline knows from experience that the distribution of the number of suitcases that get lost each week on a certain route is approximately normal with μ = 1

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Question 930580: An airline knows from experience that the distribution of the number of suitcases that get lost
each week on a certain route is approximately normal with μ = 15.5 and σ = 3.6. What is the
Probability that during a given week the airline will lose more than 20 suitcases?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
μ = 15.5 and σ = 3.6, z+=+blue%28x+-+15.5%29%2Fblue%283.6%29
......
P(x > 20) = P( z > 20) = P(z > 4.5/3.6) = normalcdf(1.25 , 100) = .1056 0r 10.56%