Find the indicated probability.
-An unprepared student makes random guesses for the five true-false questions on a quiz. Find the probability that the student gets at least one correct answer.
A)0.5
B)0.96875
C)0.03125
D)0.9375

Question

Quizplus · Accepted Answer

The probability of guessing at least one correct answer is easier to calculate by finding the probability of the opposite event (getting all answers wrong) and subtracting it from 1. The probability of getting a question wrong is 0.5 (since there are two options, true or false), and for five questions, it's $0.5^5 = 0.03125$. Therefore, the probability of getting at least one correct is $1 - 0.03125 = 0.96875$.

Find the Indicated Probability