Refer to Plastic hardness Problem 1.22. a. Set up the ANOVA table. b. Test by means of an F test whether or not there is a linear association between the hardness of the plastic and the elapsed time. Use a = .01. State the alternatives, decision rule, and conclusion. c. Plot the deviations Yi - Yi against Xi on a graph. Plot the deviations Yi - Y against Xi I on another graph, using the same scales as for the first graph. From your two graphs, does SSE or SSR appear to b~ the larger component of ssrO? What does this imply about the magnitude of R2? d. Calculate R2 and r