1. Value of slope (b) regression line..... 2.valie of y intercept (a) of the regression line is.... 3. estimated value of sale if the amount spent on advertising rises to 73 is found to be

3. The following data refers to the amount spent (in thousands of Rands) on advertising and the volume of sales ( millions of Rands). Use the data to construct a least squares regression line. Advertising 30 35 50 40 GO 75 Sales 0.8 1.1 1.] 1.8 1.2 2.2 3.1 1.8 Use the data in the above table to answer questions 31, question 32 and question 3.1