And a test of ESP the experimenter looks like cards that are
And a test of ESP, the experimenter looks like cards that are hidden from the subject. Each stack of 100 cards contains equal numbers of cards with a star, a circle, it wavy line, or a square. And experimenter looks at each of the 100 cards in turn, and the subject tries to read the experimenters mind and name The shape on each. What is the average number of correct responses if the subject does not have ESP?
And a test of ESP, the experimenter looks like cards that are hidden from the subject. Each stack of 100 cards contains equal numbers of cards with a star, a circle, it wavy line, or a square. And experimenter looks at each of the 100 cards in turn, and the subject tries to read the experimenters mind and name The shape on each. What is the average number of correct responses if the subject does not have ESP?
Solution
If the person does not have ESP, he is guessing blindly, and will get it 1/4 of the time.
Thus, the average number of correct responses is (1/4)*100 = 25. [answer]
