I am posting this problem here since I got to turn it in 2 hours:
It was originally posted in the probability forum for college.
the probability is 0.6 that a well driller will find a well of water at a depth less than 100 feet in a certain area. Wells are to be drilled for six new homeowners. Assue that finding a well of water at a depth of less than 100 feet is independent from drilling to drilling and that the probability is 0.6 on every drilling. If X is the number of wells of water found. Find:
My solution: P(X>4)=1-B(4;6,0.6)
Here since mean =3.6, I have problem to find P(X=mean)
my calculator does not give me a approximate value for b(3.6;4,0.6) !
How should I treat this question?
Thank you for your time .