My code: GLM=glm(Probability ~ Patchsize * Area, family=binomial, data=Data)
I have plotted this using ggplot2, with two fitted lines for Area. Solid line representing one area and dotted line representing another area.
I want to determine the probability of encountering invertebrates at a certain point on the fitted lines, as well as the CI.
For example, at a patch size of 768 cm2 what is the probability of encountering invertebrates in each area?