Question: Using the following data, test the model Yij = /30 + /3IXil + /32Xi2 + eij for lack of fit. Explain and justify your method.

Using the following data, test the model Yij = /30 +

/3IXil + /32Xi2 + eij for lack of fit. Explain and justify your method.

Xl X2 Y Xl X2 Y 31 9.0 122.41 61 2.2 70.08 43 8.0 115.12 36 4.7 66.42 50 2.8 64.90 52 9.4 150.15 38 5.0 64.91 38 1.5 38.15 38 5.1 74.52 41 1.0 45.67 51 4.6 75.02 41 5.0 68.66 41 7.2 101.36 52 4.5 76.15 57 4.0 74.45 29 2.7 36.20 46 2.5 56.22

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