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Math Help - Compute each probability of Y

  1. #1
    Senior Member Danneedshelp's Avatar
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    Compute each probability of Y

    Q: A spinner can land in any of four positions, A, B, C, and D, with equal probability. The spinner is used twice, and the position is noted each time. Let the random variable Y denote the number of positions on which the spinner did not land. Computer the probabilities for each value of Y.

    I do not think that I am understanding the question, because I figure this one out. Am I looking at ordered pair, since the spinner is spun twice and then noted?
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  2. #2
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    Quote Originally Posted by Danneedshelp View Post
    Q: A spinner can land in any of four positions, A, B, C, and D, with equal probability. The spinner is used twice, and the position is noted each time. Let the random variable Y denote the number of positions on which the spinner did not land. Computer the probabilities for each value of Y.

    I do not think that I am understanding the question, because I figure this one out. Am I looking at ordered pair, since the spinner is spun twice and then noted?
    The possible values of Y are 3 (spinner lands on same position twice) and 2 (spinner lands on two different positions).
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