SOLUTION: Suppose you randomly guess A, B, C or D at all 10 problems on a quiz. Find the probability of guessing exactly 4 answers correctly

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Question 870374: Suppose you randomly guess A, B, C or D at all 10 problems on a quiz. Find the probability of guessing exactly 4 answers correctly
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
p(correct) = .25, n = 10
P(x=4) = normalpdf(10, .25, 4) = .146