Question: Bigger Bag. Suppose the class in Ex. 6 buys bigger bags of candy, with 200 M&M's each. Again the students calculate the proportion of green candies they find.

a) Explain why it's appropriate to use a Normal model to describe the distribution of the proportion of green M&M's they might expect.

b) Use the 68-95-99.7 Rule to describe how this proportion might vary from bag to bag.

c) How would this model change if the bags contained even more candies?