Question 1118174
for x=2
7C2*(0.25)^2*0.75)^5=0.311
x<=2, need 1 and 0
7*0.25*0.75^6=0.337
1*.75^7=0.133
That sum is 0.782, if I use the 4 decimal place answers and then roun.

probability x>=3 is 1- the above, since this is a discrete, dichotomous function, and that is 0.218.