How much should you spend to get all the toys?

The Happy Meal has become an American institution. Burgers, fries, nuggets, and, of course, toys. Trying to collect a whole set can be fun…and sometimes frustrating. In this lesson, we’ll use probability and expected value to figure out how many Happy Meals you should plan on buying if you just have to get all of those sweet knickknacks.

You might recognize this as the Coupon Collector’s problem, but come on, that’s no fun at all. Have you ever tried to play with a coupon? It’s terrible. Also, paper cuts are the worst.

- Model Bernoulli trials with dice
- Create frequency histograms from experimental data and interpret the results
- Calculate the theoretical probabilities for completing a set of Happy Meal toys
- Use probability and expected value to calculate the average number of purchases required to complete a set of toys, and compare this with conjectures based on empirical results

- Six-sided dice

McDonald's Happy Meal Toy Fans and Toy Collectors