Problem 6.3

Problem 6. 3 The Department of Transportation analyzes a traffic count at two locations. The data for each location is shown in the table below. . Calculate Difference (D) for each row. . Find the Mean and the standard deviation for D-column. . Calculate 90% Margin of Error ( E ) for the Mean Difference . Write the Confidence Interval for the Mean Difference. Traffic Count Month Location 1 Location 2 Difference March 139246 138548 April 134012 132908 May 137055 136018 June 133732 131843 July 123552 121641 August 121139 118723 September 128293 125532 October 124631 120249 November 124609 122770 December 117584 117263