What is the mean speed of the automobiles

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Reference no: EM131455004

Question: Automobiles traveling on a road with a posted speed limit of 55 miles per hour are checked for speed by a state police system. Following is a frequency distribution of speeds.

a. What is the mean speed of the automobiles traveling on this road?

b. Compute the variance and the standard deviation.

Reference no: EM131455004

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