A noted psychic was tested for ESP. The psychic was presented with 400 cards fac

Question

A noted psychic was tested for ESP. The psychic was presented with 400 cards face down and asked to determine if each of the cards was one of four symbols: a star, cross, circle, or square. The psychic was correct in 120 cases. Let p represent the probability that the psychic correctly identifies the symbols on the cards in a random trial. Suppose you wish to see if there is evidence that the psychic was doing better than just guessing. To make this determination you test the hypotheses versus . The P-value of your test is Answer a. 0.0104. b. 0.0146. c. 0.9896.

Explanation / Answer

a. 0.0104

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