(a) Is the relationship between measured (READ) and self-estimated (EST)reading ability
Chapter 0, Problem 28.50(choose chapter or problem)
(a) Is the relationship between measured (READ) and self-estimated (EST)reading ability the same for both boys and girls? Create an indicator variablefor gender and fit an appropriate multiple regression model to answer thequestion.(b) Fit a multiple regression model for predicting IQ from the explanatoryvariables LSS, READ, and EST. Are you happy with the fit of this model?Explain.(c) Use residual plots to check the appropriate conditions for your model.(d) Only two of the three explanatory variables have parameters that aresignificantly different from zero according to the individual t tests. Drop theexplanatory variable that is not significant, and add the interaction term for thetwo remaining explanatory variables. Are you surprised by the results from fittingthis new model? Explain what happened to the individual t tests for the twoexplanatory variables.
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