In ESP tests using Zener cards, pure guessing in these tests will produce an average score of how many "hit(s)" out of 25 cards?
A) one
B) three
C) five
D) seven

Question

Quizplus · Accepted Answer

In ESP tests using Zener cards, there are 5 different symbols. Pure guessing would result in a 1 in 5 chance of guessing correctly, so out of 25 cards, the expected number of hits would be 25/5 = 5.

In ESP Tests Using Zener Cards, Pure Guessing in These