Question: C17.4 In Example 9.1, we added the quadratic terms pcnv, ptimes and inc86 to a linear model for narr86. (i) Use the data in CRIME1.RAW

C17.4 In Example 9.1, we added the quadratic terms pcnv, ptimes and inc86 to a linear model for narr86. (i) Use the data in CRIME1.RAW to add these same terms to the Pois- son regression in Example 17.3. (ii) Compute the estimate of o given by 2 (1 19 Is there evidence of overdispersion? How should Poisson MLE standard errors be adjusted? (iii) Use the results from parts (i) and (ii) and Table 17.3 to compute the quasi-likelihood ratio statistic for joint significance of the three quad- ratic terms. What do you conclude?

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