5.10. An experiment is conducted to study the inuence of operating temperature and three types of faceplate glass in the light output of an oscilloscope tube. The following data are collected: Temperature Glass Type 100 125 150 580 1090 1392 1 568 1087 1380 570 1085 1386 550 1070 1328 2 530 1035 1312 579 1000 1299 546 1045 867 3 575 1053 904 599 1066 I889 (3) Use a = 0.05 in the analysis. Is there a signicant interaction effect? Does glass type or temperature affect the response? What conclusions can you draw? (b) Fit an appropriate model relating light output to glass type and temperature. (c) Analyze the residuals from this experiment. Comment on the adequacy of the models you have considered. \fSuppose an environmental agency would like to investigate the relationship between the engine size of sedans and the miles per gallon (MPG) they get. The accompanying table shows the engine size in cubic liters and rated miles per gallon for a selection of sedans. Use this information to complete parts a through f. 1 Click to view the table showing engine size and MPG for 9 car models. 5:. Construct a scatter plot for these data. Choose the correct graph below. O A. O B. O c. O D 32 a Q S u a g a n\" 4: c E 'a. a m' .5 D2- :5 19 t. 1.9 4 1.9 4 Engine Size Engine Size b. Calculate the slope and yintercept for the regression equation. The slope is b = . (Round to three decimal places as needed.) The y-intercept is a = (Round to three decimal places as needed.) c. Provide an interpretation for the value of the slope. Because the slope is {1) , it can be concluded that a one (2} increase in (3) will (4} the (5) by an average of (6) (Round to three decimal places as needed.)