Multiple-choice questions each have four possible answers left parenthesis a, b, c, d right (a, b, c, d) , one of which is correct. Assume that you guess the answers to three such questions.
a. Use the multiplication rule to find P (WWC ), where C denotes a correct answer and W denotes a wrong answer.
P (WWC ) =
b. Beginning with WWC , make a complete list of the different possible arrangements of one correct answer and two wrong answers , then find the probability for each entry in the list.
P (WWC ) minus-see above
P (WCW ) =
nothing
P (CWW ) =
c. Based on the preceding results, what is the probability of getting exactly one correct answer when three guesses are made?
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