2 1027 11 7 11 3 31 52 55 71 8 6 9 17 47 33 22 6 8 9

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Unformatted text preview: 2.7 11 7 11 3 31 52 55 71 8 6 9 17 47 33 22 6 8 9 10 72.5 93.1 115.9 1 2 21 31 54 47 22 18 4 44 22 26 11 12 13 83.8 113.3 109.4 1 11 10 40 66 68 23 9 8 34 12 12 (i) What are the least squares estimates of the regression coefficients in the multiple regression model y = β0 + β1x1 + β2x2 + β3x3 + β4x4 + ε? (ii) Test whether or not the overall regression is significant. (Use α = 0.05). (iii) Compute the coefficient of multiple determination for the model in (i). (iv) Determine a 95% confidence interval for the true mean response when x1 = 7, x2 = 52, x3 = 6 and x4...
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