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1. A group of Western Carolina University students collected data on the speed of vehicles traveling...

1. A group of Western Carolina University students collected data on the speed of vehicles traveling through a construction zone in Cullowhee where the posted (construction) speed limit was 25 mph. The recorded speeds for 11 randomly selected vehicles are given below: 26 24 26 28 32 31 36 23 29 37 36 For this problem, you may round the mean to 30 and the sample standard deviation to 5. You may assume that it is appropriate to use the Empirical Rule. a. Use the Empirical Rule to estimate the percentage of speeds that are between 25 and 40 mph. b. Determine the actual percentage of drivers whose speeds were between 25 and 40 mph. That is, of the cars tracked, what percentage were actually going between 22 and 37 mph? c. Use the Empirical Rule to determine the percentage of drivers who were speeding (whose speeds are 25 mph or higher).

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