What if the cereal company decided to make it harder to get some drivers' cards than others? For instance, suppose the chance that each card appears
in a box of the cereal is Jeff Gordon, 10% ; Dale Earnhardt, Jr., 30% ; Tony Stewart, 20%; Danica Patrick, 25%; and Jimmie Johnson, 15%. How would you modify the simulation in the example to estimate the chance that a fan would have to buy 23 or more boxes to get the full set?