SOLUTION: You and two friends decided to to to Wendy's now suppose that instead you go to McDonald's which is recently filled approximately 88.3% of the orders correctly. what is the probabi
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Question 1166118: You and two friends decided to to to Wendy's now suppose that instead you go to McDonald's which is recently filled approximately 88.3% of the orders correctly. what is the probability that.
a. all three orders will be filled correctly
b. none of the three will be filled correctly
c. at lease two of the three will be filled correctly
d. what are the mean and standard deviation of he binomial distribution used in a through interpret these values.
I only need a and d answered Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! a, is 0.883^3=0.6885
b. is 0.117^3=0.0016
c. at least 2 of 3 means all (0.6885) and 2 of the 3 (3*0.883^2*0.117=0.2737 for probability 0.9621 (I rounded at the end; rounding earlier would give 0.9622).
d. the mean is np=3*0.883=2.649
variance is np(1-p)=2.649*0.117=0.3099
sd is sqrt (V)=0.5567
