In Shell Pulung Bulu, the yearly data of cars that have been serviced and the gross receipts are shown below. (a) Based on these data, can it be concluded that there is a relationship between the number of cars serviced and the gross receipts? (Use graphing paper for the scatter plot. If you do not have a graphing paper, use a bond paper but make sure that your graph is properly and accurately drawn) No of Serviced Cars, x 361 270 306 22 35 10 8 12 21 Gross receipts (in million pesos), 3844 1962 1371 1064 334 241 188 154 125 y (b) Find y' when x = 0.25. (c) Find the mean of the x and y variables. Then substitute the mean of the x variable into the corresponding regression line equations and find y'. Compare the value of y' with y bar and generalize the results.

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