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Activity #8 um what is required in each of the following. The paired data below consist of the cost of advertising (in thousands of pesos) and the number of products sold ( in thousands of units). cost 9 9 10 Number 85 52 55 68 67 86 83 73 a. Plot a scatter diagram b. Find the equation of the regression line to predict weekly sales from advertising expenditures. c. Compute the coefficient of determination. Interpret. d. Estimate the number of products sold when advertising cost are 4500.00 pesos. 2. Given the following data on the number of hours of study (X) for an examination and the grades (Y) received by a random sample of 10 students, (a) compute the spearman rank correlation coefficient and (b) compute for the Pearson correlation coefficient. Student Y 56 44 79 72 70