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Binomial Distribution
5. Binomial Distribution & Discrete Random Variables / Binomial Distribution / Problem 4
Problem 4

A study shows that 14%14\% of shoppers use reusable bags when shopping. You randomly ask shoppers, one at a time, whether they use reusable bags. Let the random variable XX represent the first trial where a shopper uses reusable bags. Find the probability that the first person who uses reusable bags is the third person you ask. Also, determine whether this event is unusual.