SOLUTION: what is the probability of getting 8 questions right on a 10 question multiple choice test where the choices are (a,b,c,d)?
{{{nCk* P(success)^k * P(failure)^n-k}}} FORMULA
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Question 543420: what is the probability of getting 8 questions right on a 10 question multiple choice test where the choices are (a,b,c,d)?
FORMULA
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
 = .25)
and  = .75)
. Hence
 = (10C8)(.25)^8(.75)^2 \approx 3.86*10^{-4})
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