If you make random guesses for 6 multiple-choice test questions (each with five possinle answers), what is the probability of getting the fi

Question

If you make random guesses for 6 multiple-choice test questions (each with five possinle answers), what is the probability of getting the final question correct given the first five answers are all wrong?

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Answers ( No )

    0
    2021-09-10T03:33:08+00:00

    What happened in the first questions doesn’t influence the final question, so the probability is simply 1/5 = 0.2

    0
    2021-09-10T03:33:21+00:00

    39.31 percent

    use binomial Cdf on your calculator.

    insert it like such:

    num trials: 6

    prob: .2

    Lower bound: 1

    Lower bound: 2

    then click enter 🙂

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