The following data represent a company's yearly sales volume andits advertising expenditure over a period of 5 years. (Y) Sales inMillions of Dollars 15 16 18 17 16 (X) Advertising in ($10,000) 3233 35 34 36
(a) Compute the coefficient of determination for the estimatedregression equation you got in the previous in-class problem.
(b) Interpret the meaning of the value of the coefficient ofdetermination that you found in (a). Be very specific.
(c) Perform a t test and determine whether or not X and Y arerelated. Let = 0.05.
(d) Perform an F test and determine whether or not X and Y arerelated. Let = 0.05.
