Question

The speeds (in miles per hour) of motorists ticketed during one day on a five-mile stretch of highway are

listed below.

80, 70, 89, 85, 85, 75, 72, 73, 80, 83, 86, 88, 88, 70, 89, 74, 75, 84, 73, 71



The mean speed is 79.5 mph with a standard deviation of 6.8 m.



If the police decide to only ticket people going 3 standard deviations or more above the standard deviation, what would the range be?

Your answer:

Answer 1

19

Explanation:

Range is solved by subtracting the lowest and highest numbers which int his case is 70 and 89 so that make 19