Question: Data collected by the highway patrol indicate that the average speed on a stretch of interstate is 63 mph, with a standard deviation of 15.

Data collected by the highway patrol indicate that the average speed on a stretch of interstate is 63 mph, with a standard deviation of 15. Using this mean and standard deviation, and assuming a normal distribution, answer the following questions with your work:

a. What is the likelihood of observing a vehicle traveling 80 mph or more?

b. What is the likelihood of observing a vehicle traveling 45 mph or less?

c. If a police officer observed 953 vehicles in an afternoon, how many of them would be traveling 90 mph or more?

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