Mr.W puts two blue marbles and one green marble into his pocket. Then he randomly takes out one. After recording its color, he puts the marble back to the pocket. He repeats this trial many times. Answer the following questions: 1. What is the probability he has no more than 3 blue marbles within 6 trials. 2. What is the probability he has no more than three blue marbles in a row within 6 trials. 3. What is the probability he has no more than 2 blue marbles in a row within 6 trials. 4. What is the probability that both colors have been recorded until his sixth trial. 5. What is the expectation of the number of trials with which he gets both colors of marbles. Please answer all 5 questions. Thanks a lot
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W has two blue marbles and one green marble in his pocket. He randomly draws one marble, records its color, and then puts it back. This process is repeated for multiple trials. Show more…
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