Question 1076606
binomial
8C3(.1)^3*.9^5
There are 8C3=56 ways three may be chosen, and the probabilities add to 1 and the exponents to 8
0.0330
This is low, does it make sense?
The expected value is about 1 (0.8 to be exact), and the sd is about 0.85, so this is a reasonable answer.