(Solution) - A For the data presented in Table 11 9 sketch a -(2025 Original AI-Free Solution)

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a. For the data presented in Table 11.9, sketch a confidence band in the xy-plane for the regression line with confidence coefficient 0.95.
Table 11.9 Data for Exercise 1

b. On the same graph, sketch the curves which specify the limits at each point x of a confidence interval with confidence coefficient 0.95 for the value of the regression line at the point x.