The speeds of cars on a road are approximately normally distributed with a mean = 58
Chapter 7, Problem 9(choose chapter or problem)
The speeds of cars on a road are approximately normally distributed with a mean = 58 km/hr and standard deviation = 4 km/hr. (a) What is the probability that a randomly selected car is going between 60 and 65 km/hr? (b) What fraction of all cars are going slower than 52 km/hr?
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