Question: One test for ESP involves using Zener cards. Each card shows one of five different symbols (square, circle, star, cross, or wavy lines), and the

One test for ESP involves using Zener cards. Each card shows one of five different symbols (square, circle, star, cross, or wavy lines), and the person being tested has to predict the shape on each card before it is selected.

What is the probability of correctly predicting more than 20 cards in a series of n = 100 trials?

(ANSWER IS p=0.50)

What is the probability of correctly predicting more than 30 cards in a series of n = 100 trials?

(ANSWER IS p=0.62)

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