A multiple-choice quiz contains ten questions. For each questions there are one correct answer and four incorrect answers. A student gets three correct answers on the quiz. Test the hypothesis that the student is guessing.

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- Jan 23rd 2009, 11:50 AMflamingHypothesis Test Question
A multiple-choice quiz contains ten questions. For each questions there are one correct answer and four incorrect answers. A student gets three correct answers on the quiz. Test the hypothesis that the student is guessing.

- Jan 23rd 2009, 06:45 PMRapha
I don't know. But I guess it's kinda helpful knowing what the probability is.

10 questions, 3 (questions correct answered) correct answers

=>

5 choices per question;

probability for guessing the right answer is therefor

probability for guessing the wrong answer is therefor

=> probability("three right answers") =

the probability of guessing exactly 3 correct answers out of 10 is 20% (=0.2) - Jan 24th 2009, 02:11 AMmr fantastic