A noted psychic was tested for ESP. The psychic was presented with 200 cards fac

Question

A noted psychic was tested for ESP. The psychic was presented with 200 cards face down and asked to determine if the card was one of five symbols: a star, cross, circle, square or three wavy lines. The psychic was correct in 50 cases. Let p represent the probability that the psychic correctly identifies the symbol on the card in a random trial. Suppose you wished to see if there is evidence that the psychic is doing better than just guessing. To do this you test the hypotheses H0: p = 0.20, Ha: p > 0.20. The P-value of your test is Answer a. between .10 and .05. b. between .05 and .01. c. between .01 and .001.

Explanation / Answer

c. between .01 and .001.

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