Florida County Data Set. (See Appendix C.4.) Model the number of infant deaths in each county using Poisson regression, where the rate is a function of a county’s median family income. Interpret the...

Florida County Data Set. (See Appendix C.4.) Model the number of infant deaths in each county using Poisson regression, where the rate is a function of a county’s median family income. Interpret the regression parameter for income using two counties whose median family incomes differ by $1,000, and again for two counties whose incomes differ by $2,000. Plot the logarithms of the observed county mortality rates versus median income, and overlay them with the fitted values from the regression. Does the model seem to fit? If not, how might you improve it?