A student takes a 20-question, true/false exam and guesses on each question. Find the probability of passing if the lowest passing grade is 15 correct out of 20.
I think I have to find the p(success) and q(failure) rates. What's a quick way to do that? Am I right, or wrong?
DATE
Question answered on Jul 22, 2018
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Solution~000495432.zip (18.37 KB)
