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Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of...

Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 68 miles per​ hour, with a standard deviation of 5 miles per hour. Estimate the percent of vehicles whose speeds are between 63 miles per hour and 73 miles per hour.​ (Assume the data set has a​ bell-shaped distribution.)

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of vehicles whose speeds are between 63 miles per hour and 73 miles per hour.

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