Try the binomial probability function:
P(x) = (nCx)(p^x)[q^(n-x)]
x = 70
n = 30
p = .34
q = 1 - p = 1 - .34 = .66
Substitute the values and go from there.
An easier way would be to use a binomial probability table with the values stated above.
I hope this will help.
The passing rate for the boards is 34%. If 70 people take the boards, the probability that 30 of them will pass the exam is?
2 answers
Correction:
x = 30
n = 70
The other values stay the same.
Sorry for any confusion.
x = 30
n = 70
The other values stay the same.
Sorry for any confusion.