You may need to use the appropriate appendix table or technology to answer this question. A government agency provides the number of miles that residents of the 75 largest metropolitan areas travel...

You may need to use the appropriate appendix table or technology to answer this question.

A government agency provides the number of miles that residents of the 75 largest metropolitan areas travel per day in a car. Suppose that for a simple random sample of 50 City A residents the mean is 22.6 miles a day and the standard deviation is 8.9 miles a day, and for an independent simple random sample of 40 City B residents the mean is 18.2 milesa day and the standard deviation is 7.9 miles a day.