The Mathematics HL Statistics Option and your TI-84+ GDC: why you should know how to use the Solver.
The fun part is that you actually can have multiple variables within the Solver expression, which will all appear on the next page after you press down. Slot in (n-1) values, go to the last one, and Solve it. It’s useful for all kinds of things, but I’m too tired now to cook up other examples.
Correction (6/10/2010): the final line in solver should be 0 = normalcdf(-A,A,46.63,2.133) - 0.4.
