You are taking a 10 question
multiple choice test. If each question has four choices and
you guess on each question, what is the probability of getting
exactly
7
questions correct?
n = 10
k = 7
n – k = 3
p = 0.25 = probability of guessing the correct answer on
a question
q = 0.75 = probability of guessing the wrong answer on
a question
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