Question

If there are 10 spa beds and the rate of occupying the spa beds is 0.8. The state will force the spa center to shut down if not more than 2 beds are filled. What would be the probability for the spa center to go out of business?

Answer 1

p(not more that 2) = 1 - p(0 or 1 or 2)

p(0) = 0.2^10
p(1) = 10*.2^9*.8^1
p(2) = You tell me.

Answer 2

p2= 10!/(2! *(10-2)!) * 0.8^ 2 * (1-0.8)^8

Answer 3

Super. Now, did you answer the question?

Answer 4

yes.