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The speeds of cars on a given interstate are normally distributed with a mean of 72 miles per hour and a standard deviation of 3.2
The speeds of cars on a given interstate are normally distributed with a mean of 72 miles per hour and a standard deviation of 3.2 miles per hour. What percent of drivers are traveling between 70 and 80 miles per hour based on this distribution? (1) 56% (3) 68% (2) 65% (4) 73%
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