Answer:
The probability of success is .12
The probability of failure is .88
According to the binomial theorem the probability of 3 success is
10! / (3! * 7!) * .12^3 * .88^7 = .085
Line c it is a reflection of line b
X < 31.5
answer is the middle symbol
start at 31.5 (right in the middle between 31 and 32) move open arrow to the left
When you estimate, make your numbers easy. I would round 2.12 to 2 and 58 to 60. then you would have 2 * 60 = 120 which would be close to 122.96
