Wages versus Sales Volume A department store chain collected data from ...

         Wages versus Sales   Volume A department store chain collected data   from each of its stores for a month. The data on total wages paid to sales   personnel and on sales volume are as follows:          Store Sales Wages (x) Sales Volume (y)     (thousands) (hundreds of thousands)     A 30.2 3.7     B 52.1 4.8     C 23.6 2.7     D 38.2 3.5     E 45.8 4.7     F 59.2 5.1     G 41.7 3.9     H 62.1 5.4                          (a)   Plot the scatter diagram, using wages as the independent   variable x.   (b)   Find the least-squares regression line and the   correlation coefficient.   (c)   Using the regression line found in Exercise 26(b),   determine how many thousands of dollars will be   spent   in sales wages to support a sales volume of $700,000.