Question: A study was made to investigate the relation between ingredients of cigarettes and the amount of carbon monoxide emitted. One cigarette was selected from each

A study was made to investigate the relation between ingredients of cigarettes and the amount of carbon monoxide emitted. One cigarette was selected from each of 25 different types of cigarettes, and the data are shown in Appendix D, Table D.2. In this exercise we are interested in the relation between carbon monoxide (CO) and nicotine (NIC). Complete the Fit the simple linear model COB+B, NIC+ parameter estimation and 40 tables. Determine the correlation between these two variables.

b. Prepare a plot of residuals against predicted values. How would you label case 3? Compute the standardized and Studentized residuals and Cook's distance for this case. Would deletion of this case substantially change the results of the regression analysis?

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