I have no idea what you're doing
6 choose 4 is 15
My advice is to do it by 'hand', less calculator
I've attached a PDF of the problem worked out by my professor. I still cannot figure out, even with the work shown, what I am doing wrong. It's sort of sad and I'm losing my mind here lol
Where it says P(X=4)=C(6,4)(.6)^4(.4)6-4
I'm putting this into the calculator as:
(.6)^4 x (.4)^2 and am NOT getting .311
What am I doing wrong?