SOLUTION: ) A test consists of five questions, and to pass the
test, a student has to answer at least four questions
correctly.Each question has three possible answers,
of which only one
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Probability-and-statistics
-> SOLUTION: ) A test consists of five questions, and to pass the
test, a student has to answer at least four questions
correctly.Each question has three possible answers,
of which only one
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Question 1190147: ) A test consists of five questions, and to pass the
test, a student has to answer at least four questions
correctly.Each question has three possible answers,
of which only one is correct. If a student guesses
on each question, what is the probability that the
student will pass the test ? Answer by greenestamps(13200) (Show Source):
(a) P(each one right) = 1/3; P(each one wrong = 2/3)
(b) P(four right, one wrong, in a particular order) = (1/3)^4 times (2/3)^1 = 2/243
(c) number of different choices for the one problem that is wrong = 5
