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25. Short Answer Question We have a dataset with n= 10 pairs of observations (Li, Yi), and n n r; = 683, Vi = 813, i=1 i=1 12

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Formula for 99% Confidence interval for the slope is = b; Et* Se Sxx x=683, Zy=813, Xx2 =47405, y2 =66731. Sxy=56089 Ex)2 SxxDf=n-2= 10-2=8 Level of significance a = 1-0.99=0.01 Critical value to = T.INV.2T(0.01,8)= 3.355 (Using excel) 99% Confidence

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