7. A sample of 40 games sold for the iPad has prices that have a distribution that is skewed to the high end with a mean of $3.48 and a standard deviation of $2.23. Teens who own iPads typically own about 20 games. Using the 68–95–99.7 Rule, draw and label an appropriate sampling model for the average amount a teen would spend per game if they had 20 games, assuming those games were a representative sample of available games.