Q1. What happened why did you leave the question and suddenly demand higher price?
Q2. How do I calculate the change in average earnings (wages) over a 1 year period. I know how to calculate the percentage average change but not the change in average earnings.
A thick book with 1200 pages has quite a few typographical errors. There are only 180 pages without typographical errorsin whole book. If typographical errors occur andomly, about how many pagesin book have three typographical errors? What is the median number of typographical errors per page?