Maria is taking a multiple-choice
exam in which
there are five possible answers for each question.
The instructions indicate that she will be rewarded
2 points for each correct response, that she will lose
half a point for each incorrect response and that no
points will be added or subtracted for answers left
blank.
A. If Maria does not know the correct answer to a
question, is it to her advantage or disadvantage to
guess at an answer?
B. If she can eliminate one of the possible choices, is it
to her advantage or disadvantage to guess at the
answer?
