A student ran out of time on a multiple choice exam and randomly guessed the answers for two problems. Each problem had 5 answer choices – a

Question

A student ran out of time on a multiple choice exam and randomly guessed the answers for two problems. Each problem had 5 answer choices – a, b, c, d, e- and only one correct answer. What is the probability that she answered neither of the problems correctly? Do not round your answer. (If necessary, consult a list of formulas.)​

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Thiên Thanh 6 months 2021-07-26T12:53:38+00:00 1 Answers 55 views 0

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    2021-07-26T12:54:39+00:00

    Answer:

    there is a 64% chance that the student got both problems wrong

    a 32% chance that they got only 1 correct

    and a 4% chance that they got both correct

    Step-by-step explanation:

    There are 25 total possible combinations of answers, with 8 possible combinations where the student would get 1 answer right, and 1 combination where the student would get both answers correct.

    25-9=16

    \frac{16}{25} =\frac{x}{100}

    \frac{64}{100}

    64%

    \frac{8}{25} =\frac{y}{100}

    \frac{32}{100}

    32%

    \frac{1}{25} =\frac{z}{100}

    \frac{4}{100}

    4%

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