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Expected value and variance for the number

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Reference no: EM132126317

On a multiple choice test, there are 8 questions worth 12.5 points each. There are four choices for each question (a,b,c,d). Robin has not studied for the quiz and decides to randomly guess on all of the questions.

1. The probability that Robin will answer fewer than 3 questions correctly.

2. The expected value and variance for the number of points that Robin will score on the exam.

Reference no: EM132126317

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