Format for the paper to be handed in
Some have complained that there is going to be a lot of work typing formulae in Word, particularly for Problem 2. If you prefer to write formulae by hand on a separate sheet of paper, that's ok. However, make sure that it is clearly written, and also that you make clear references when you refer to a formula on this sheet. The discussion parts of the exam should be typed.
Hint for 2b
Let X bar denote the global average of all the Xs. Then it may be useful to rewrite
