2.4 A producer of outdoor clothing used a focus group to obtain information about the demand for fleece jackets with built-in, battery-operated warming panels.

At prices of $100, $90, $80, $70, $60, and $50, the focus group demanded 23, 31, 40, 44, 48, and 60 jackets, respectively. Use the Excel Trendline option to estimate a linear demand function and to determine the associated R2 statistic. (Hint: Put price in the first column. Price will appear on the horizontal axis in this case.)