I have been having issues figuring out this binomial distribution problem listed below. I know the answer is .1805, which I ended up getting wrong. I was curious on the steps to solve this question, I came up with the following list of variables to use when solving but I believe I am way off course.
p = .004 <---- 1\250
q = .996
n = 50
x = 2
[FONT="]A test given to detect the HIV Aids virus in a person produces a false positive 1 out of every 250 times, which means a person who does not have the virus has test results they say they do. If 50 people are tested, what is the probability that 1 or 2 people tests positive even though they do not have the virus?
Any chance someone could tell me where I am going wrong or list the steps to solve?
Thanks,
Adam[/FONT]
p = .004 <---- 1\250
q = .996
n = 50
x = 2
[FONT="]A test given to detect the HIV Aids virus in a person produces a false positive 1 out of every 250 times, which means a person who does not have the virus has test results they say they do. If 50 people are tested, what is the probability that 1 or 2 people tests positive even though they do not have the virus?
Any chance someone could tell me where I am going wrong or list the steps to solve?
Thanks,
Adam[/FONT]