Question

Suppose that, without even reading the questions, you guess on all four questions of a true-or-false test. Compare the quantity

Answer 1

Answer: The two quantities are equal.

Step-by-step explanation:

Given that without even reading the questions, you guess on all four questions of a true-or-false test.

In Column A, Probability of choosing right answer will be

P(exactly one right answer) = 1/2

Number of right answers = 1/2 × 4 = 2

In Column B, Probability of choosing right answer will be

P(exactly one wrong answer) = 1/2

one wrong

Number of wrong answers = 1/2 × 4 = 2

Therefore, we conclude that the two quantities are equal.