Suppose a young girl answers correctly on 37 questions from a 50-item test but answers erroneously on 9 questions, leaving 2 questions blank. Suppose their are four alternatives per question. Using established principles of probability, what would be her corrected score?
A) 32
B) 34
C) 36
D) 37

Question

Quizplus · Accepted Answer

Her corrected score is calculated by subtracting one-fourth of the number of wrong answers from the total number of correct answers. This accounts for the chance of guessing correctly on a four-option question. So, her corrected score = 37 - (9/4) = 37 - 2.25 = 34.75, which rounds to 34.

Suppose a Young Girl Answers Correctly on 37 Questions from a 50-Item