Question 919719
p(dem) = .45,  n = 12
P(x = 7) = binompdf(12, .45, 7)
Recommend Using stattrek.com to check Your TI Calculator Results
until You are comfortable using it.
re TY
So good...to hear You checked: 12C7(.45)^7(.55)^5 with Your Calculator!!!
Music to my ears!!!
For ex: When it comes to cumulative Probabilities...
P(x ≤ 7) You will be very...happy to be able to Use binomcdf(12, .45 , 7)
as
P(x ≤ 7) = P(0) + P(1) + P(2) + P(3) + P(4) + P(5) +P(6)  + P(7)
:)