The following data are a result of an investigation as to the effect of reaction temperature x on percent conversion of a chemical process y. [See Myers and Montgomery (2002).] Fit a simple linear regression, and use a lack-of-fit test to determine if the model is adequate.Discuss.

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Temperature Conversion Observation (°C),x 200 43 78 69 73 48 78 65 74 76 250 200 250 2 3 4 189.65 260.35 225 225 225 225 10 79 225 225 11 83 12 81