SOLUTION: Consider a binomial experiment with 20 trials and probability 0.45 on a single trial. Use the normal distribution to find the probability of exactly 10 successes. Round your answer

Question 474574: Consider a binomial experiment with 20 trials and probability 0.45 on a single trial. Use the normal distribution to find the probability of exactly 10 successes. Round your answer to the thousandths place.
a. 0.500
b. 0.159
c. 0.162
d. 0.155

Answer by Edwin McCravy(20063) (Show Source): You can put this solution on YOUR website!

C(n,x)*p^x(1-p)^n-x

C(20,10)*(0.45)¹⁰(1-0.45)^20-10

C(20,10)*(0.45)¹⁰(0.55)¹⁰

0.1593494555

Rounded to thousandths place:

0.159

Edwin

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