For the study described in the previous exercise, answer the following questions.
a. The original sample consisted of 52 paintings. These paintings were then divided into two samples consisting of 30 painted before 1500 and 22 painted after 1500. What are the two populations of interest?
b. What population characteristics are being estimated?
c. Suppose that the paintings selected for analysis were selected at random from all paintings that portray The Last Supper. Do you think that the estimate produced for average plate- to- head size ratio for paintings made before 1500 is likely to be less accurate than the corresponding estimate for paintings made after 1500? Explain.