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The average speed of cars driving in a construction zone on the Garden State Parkway is 63 mph, and the standard deviation is 12
The average speed of cars driving in a construction zone on the Garden State Parkway is 63 mph, and the standard deviation is 12 mph. Assume that the distribution of construction zone speeds is normal, and suppose that 95 randomly selected cars are researched. Answer the following questions. Round all answers to 4 decimal places where possible. a. What is the distribution of ? X-NO b. What is the distribution of ? - N c. For a single randomly selected car, find the probability that it is driving between 62 and 64 mph. d. For the group of 95 cars, find the probability that the average speed is between 62 and 64 mph. e. For part d), is the assumption of normal necessary? No Yes > Next Question
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