Homework Help: statistics

Posted by Rosalyn on Thursday, July 28, 2011 at 3:43pm.

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

statistics - MathGuru, Thursday, July 28, 2011 at 5:18pm
Use the binomial probability function:

P(x) = nCx(p^x)[q^(n-x)]

n = 20
x = 10
p = 0.45
q = 1 - p = 0.55

Substitute into the function and go from there.

Note:
You can also use a binomial probability function table with the values listed to find the probability as well. It is an easier way of doing this problem.

I hope this will help get you started.
statistics - LOL, Friday, June 22, 2012 at 9:05am
THis answer is wrong

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