The manufacturer of your favorite breakfast cereal is including free movie tickets in approximately 20% of its boxes of cereal. How would you conduct a simulation to determine approximately how many boxes of cereal you would have to buy to find a free movie ticket?

Use random digits from 0 to 9, assigning two digits (such as 0 and 1) to mean a box contains a ticket and the other eight to mean it does not. This represents the 20% chance of a ticket in each box. In each trial, generate digits until a ticket digit appears; repeat many trials and average the number of boxes needed. The correct choice is “digits.”

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