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Suppose Jon is taking a test with 5 true-false questions and 5 multiple questions with 4...

Suppose Jon is taking a test with 5 true-false questions and 5 multiple questions with 4 choices each. He knows nothing so he willl answer randomly

a) find the expected number of true-false questions he will answer correctly?

b) Find the probability that Jon answers exactly 7 questions correctly?

Math   Statistics-And-Probability   
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