Question

A

a. True
b. False quiz has three questions. when guessing, the probability of getting a question correct is the same as the probability of getting a question wrong. what is the probability that a student that guesses gets at least 2 questions correct? (give your answer to 2 decimal places)

Answer 1

The probability of getting a correct answer on a given question is 1/2

To get all 3 questions correctly, then you must guess the 1st question correctly, as well as the 2nd and 3rd questions

P(all 3 correct) = P(1st question correct)*P(2nd question correct)*P(3rd question correct)
= (1/2)^3 = 1/8
hope this helped