By sheer random guessing, on the average an examinee can expect to get __________ of the items on a true-false test right and __________ of the items on a four -option multiple-choice test right.
A) 25%, 40%
B) 50%, 25%
C) 60%, 30%
D) 75%, 20%

Question

Quizplus · Accepted Answer

For a true-false test, there are two options for each question, so by guessing, an examinee has a 1 in 2 chance of getting a question right, which is 50%. For a four-option multiple-choice test, there is a 1 in 4 chance of guessing correctly, which is 25%.

By Sheer Random Guessing, on the Average an Examinee Can