Question 260745
Lets assume that 
P(scotch) = .50
P(bourbon) = .50
We have a binomial distribution here:
P(correct at least 12): (15c12)*(.5^12)(.5^3) +(15c13)*(.5^13)(.5^2) + (15c14)*(.5^14)(.5^1) + (15c15)*(.5^15)(.5^0)
P(correct at least 12) ~ .017578