Suppose you are going to shoot free throws until you make one. You are typically a 40% free-throw shooter. How would you simulate one trial of this geometric setting?

A geometric setting counts the number of attempts needed to get the first success. To simulate one trial, use random digits with a 40% success rate and count the digits until the first success occurs. Thus, “count the number of digits until you obtain a success” is the correct choice; the 0–4 rule in choice D would make success 50% likely, not 40%.

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