Activity 7.7
How Many Boys (or Girls)?
9
7. In taking a multiple-choice test, ther...
Mathematics, 23.04.2020 00:25 Emmaxox715
Activity 7.7
How Many Boys (or Girls)?
9
7. In taking a multiple-choice test, there are five possible answers for each problem, only one of
which is correct. Assume that someone guesses randomly on all 25 problems.
a. What is the probability of getting the first problem correct?
b. What is the probability of getting the first problem wrong?
c. What number of correct answers is needed to achieve a passing grade of 70%?
d. What is the probability of getting a passing grade with the minimum number correct?
Answers: 1
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