According to insurance records, a car with a certain protection system will be recovered 94% of the time. If 300 stolen cars are randomly selected, would it be unusual for 280 stolen cars to be recovered? In other words, is 280 more than 2 standard deviations above the mean? Note: Since np(1 - p) > 10 then we can assume the data approximates a normal distribution.

MATLAB: An Introduction with Applications
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According to insurance records, a car with a certain protection system will be recovered 94% of the time. If 300 stolen cars are randomly selected, would it be unusual for 280 stolen cars to be recovered? In other words, is 280 more than 2 standard deviations above the mean? Note: Since np(1 - p) > 10 then we can assume the data approximates a normal distribution.
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