Mathematics, 13.01.2021 17:30 tina7659

In a test of ‘psychometry’ the car keys and wrist watches of 5 people are given to a medium. The medium then attempts to match the wrist watch with the car key of each person. What is the expected number of correct matches that the medium will make (by chance)? What is the probability that the medium will obtain at least 1 correct match?

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In a test of ‘psychometry’ the car keys and wrist watches of 5 people are given to a medium. The med...

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