Question: Q21 (EC). 16.10. A test for extrasensory perception (ESP) involves asking a person to tell which of 5 shapes-a circle, star, triangle, diamond, or

Q21 (EC). 16.10. A test for extrasensory perception (ESP) involves asking a

Q21 (EC). 16.10. A test for extrasensory perception (ESP) involves asking a person to tell which of 5 shapes-a circle, star, triangle, diamond, or heart-appears on a hidden com- puter screen. On each trial, the computer is equally likely to select any of the 5 shapes. Suppose researchers are testing a person who does not have ESP and so is just guessing on each trial. What is the probability that the person guesses the first 4 shapes incorrectly but gets the fifth correct? (a) 1/5 (b) (4) (4)(5)() (e) 4/5

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