Spr?k og metafor

One more exercise for Wed Feb 6 (which I mentioned during the lecture, but forgot to include when I posted yesterday's message): For the 141 Roman era Egyptian life-times studied in Nils Exercise 5, consider the Gamma(a,b) model, and construct two approximate 90% confidence ellipses for (a,b). The first should use "only the model", involving the J matrix; the second is the model-robust version involving both the J and the K matrix. For practicalities regarding how to squeeze an ellipse out of R, consult p. 141 in the Gerda-Nils book.