A) for What Kind of Distribution Does the 68-95-99

Essay

A) For what kind of distribution does the 68-95-99.7 rule work?
B) What is the 68-95-99.7 rule or summary? If it helps your explanation, use a drawing.
C) One year, the SAT verbal test had scores with a mean of 500 and a standard deviation of 100. SAT scores are normally distributed. Approximately what percent of the people taking the SAT verbal test that year scored above 600? (Write or draw enough to make your reasoning clear.)