SOLUTION: On a multiple choice test of 10 questions, each question has 4 possible answers. A student is certain of the answers to 4 questions, but totally baffled by 6 question. If the stude
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Question 920237: On a multiple choice test of 10 questions, each question has 4 possible answers. A student is certain of the answers to 4 questions, but totally baffled by 6 question. If the student randomly guesses the answers to those questions, what is the probability that the student will get a score of 5 or more on the test? Express your answer to two decimal places. Answer by ewatrrr(24785) (Show Source):
You can put this solution on YOUR website! p(correct guess) = .25, n = 6 (number of questions guessed)
P(x ≥ 1) = 1 - P(x = 0) = 1 - .75^6 = 1 - .5625 = .4375 0r 43.75%
43.75% chance of getting a score of 5 or more on the test
