Medical writing is the activity of producing scientific documentation by a specialized writer. The medical writer typically is not one of the scientists or doctors who performed the research. For a group of medical writers, $1\%$ had no errors per page, $9\%$ had one error per page, $30\%$ had two errors per page, $20\%$ had three errors per page, $20\%$ had four errors per page and $10\%$ had five errors per page. The max number of errors observed is six per page.

Use the information above to answer the following questions.