An exam has a pass rate of 45%. What is the probability of exactly 4 out...
An exam has a pass rate of 45%. What is the probability of exactly 4 out of 9 people passing the exam? Round your answer to two decimal places.
Homework Answers
Here p=0.45 is same for all, n=9 is constant, events are independent and only two outcomes
Hence all the properties of binomial are satisfied
So we will use binomial distribution to find required probability
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