Mr. James McWhinney, president of Daniel-James Financial Services, believes there is a relationship between the number of client contacts and the dollar amount of sales. To document this assertion, Mr. McWhinney gathered the following sample information. The x column indicates the number of client contacts last month and the y column shows the value of sales ($ thousands) last month for each client sampled. (Round your answers to 3 decimal places.) Sales (S Sales (S 16.66 polnts Number of contacts thousands) Number of contacts thousands) Skipped 24 14 23 48 50 30 90 85 120 110 12 20 30 80 eBook 46 50 Reterencesa a. Determine the 0.95 confidence interval, in thousands of dollars, for the mean of all sales personnel who make 40 contacts. b. Determine the 0.95 prediction interval, in thousands of dollars, for a particular salesperson who makes 40 contacts