Assume that the speed of automobiles on an expressway during rush hour is normally distributed with...

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Assume that the speed of automobiles on an expressway during rush hour is normally distributed with...

Assume that the speed of automobiles on an expressway during rush hour is normally distributed with a mean of 66 mph and a standard deviation of 5mph. if 400 cars selected at random, how many will be traveling slower than 60 mph

math Statistics-And-Probability

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