Question

Statistics
Find the normal approximation for the binomial probability that x=4, where n=12 and p=0.7. Compare this probability to the value of P(x=4) found in Table 2 of Appendix B in your textbook.

Answer 1

ahh, normal approximations for binomial ... tricky

Answer 2

lol, yeah, I don't know where to start.

Answer 3

the mean of a binomial is just n*p

Answer 4

I thought I was over looking something and it would be easy, I guess not.

Answer 5

the sd is sqrt(n*p*p') where p' = 1-p