1. The problem statement, all variables and given/known data If a fair die is tossed 7 times what is the probability of at least two 4s? 2. Relevant equations 3. The attempt at a solution To solve this I used my TI-84's binomcdf function. I just want to see it I'm doing it correctly. p(2<=x<=7) = 1 - p(0<=x<=1) = 1 - binomcdf(7,1/6,1) = 0.330 Thanks.