A consumer buying cooperative tested the effective heating area of 20 different electric space heaters with different wattages. Here are the results. Heater Wattage Area 1 1, 600 225 2 790 145 3 1, 470 190 4 1, 320 125 5 1, 320 136 6 1, 200 213 7 930 125 B 2, 000 345 9 1, 200 130 10 1, 600 220 11 1, 200 154 12 510 55 13 550 90 14 1, 600 245 15 2, 200 275 16 1, 400 245 17 650 125 13 1, 300 225 19 500 90 20 450 35 pictureClick here for the Excel Data File a. Compute the correlation between the wattage and heating area. Is there a direct or an indirect relationship? [Negative value should be indicated by a minus sign. Round your answer to 3 decimal places.) 0 Answer is complete and correct. b. Conduct a test of hypothesis to determine if it is reasonable that the coefficient is greater than zero. Use the 0.10 significance level. (Negative value should be indicated by a minus sign. Round intermediate calculations and nal answer to 3 decimal places.) H0: p S 0; H1: p > 0 Reject Ho if D 1.3304 6 Answer is not complete. -: 0 Answer is not complete. c. Develop the regression equation for effective heating based on wattage. {Negative value should be indicated by a minus sign. Round your answers to 3 decimal places.) 6 Answer is not complete. + | Wattage a d. Which heater looks like the \"best buy\" based on the size of the residual? [Negative value should be indicated by a minus sign. Round residual value to 2 decimal places.) 0 Answer is not complete. eighteenth a