Question 1026088
nCp (0.25)^p*(0.75)*(n-p)
probability of 0 is 0.75^6=0.1780
probability of 1 is 6 (ways it can happen)*0.25*0.75^5=0.3560
probability of 2 is 15*(0.25)^2*(0.75^4)=0.2966
probability of 3 is 20*(0.25^3)*(0.75^3)=0.1318
probability of fewer than 4 is that sum, or 0.9624