There are 20 questions on the test responces are ab c and

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There are 20 questions on the test. Responces are A,B, C and D. Each question is 5 points and only one response is correct. Suppose The guesses of a student are independant. If the student needs at least 60 points to pass, what is the probability of student who is guessing to pass.

Reference no: EM13622914

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