Question 166579
a=.88 probability of a correct decision.
b=.12 probability of an incorrect decision.
We need the 1st 3 terms of (a+b)^12
a^12=.88^12=.21567
12a^11b=12*.88^11*.12=.35292
66a^10b^2=66*.88^10*.12^2=.26469
.21567+35292+.26469=.8333 probability that the jury makes the correct decision.
.
Ed