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Use the orings data set from the package DAAG to estimate a Poisson model of the number of total o-ring incidents (either blow-by or erosion)

Use the "orings" data set from the package DAAG to estimate a Poisson model of the number of total o-ring incidents (either blow-by or erosion) as a function of temperature. Plot a histogram of the total number of incidents. Does this look Poisson distributed? Test for over-dispersion and if it fails estimate a model that is robust to Poisson over-dispersion

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