Question: Find a 95% confidence interval for the regression coefficient κ 1 , assuming (A2) and (A3) hold and using the sample. In Prob. 2 Data

Find a 95% confidence interval for the regression coefficient κ1, assuming (A2) and (A3) hold and using the sample.

In Prob. 2

Data from Prob. 4

Find and graph the sample regression line of y on x and the given data as points on the same axes. Show the details of your work.

x = Deformation of a certain steel [mm], y = Brinell hardness [kg/mm2]

9 11 13 28 33 22 6 26 35 х 65 53 68 40 37 34 32 67 44

9 11 13 28 33 22 6 26 35 65 53 68 40 37 34 32 67 44

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