SOLUTION: A batch consists of 12 defective coils and 88 good ones. Find the probability of getting two good coils when two coils are randomly selected if the first selection is replaced befo

Algebra ->  Probability-and-statistics -> SOLUTION: A batch consists of 12 defective coils and 88 good ones. Find the probability of getting two good coils when two coils are randomly selected if the first selection is replaced befo      Log On


   



Question 62766: A batch consists of 12 defective coils and 88 good ones. Find the probability of getting two good coils when two coils are randomly selected if the first selection is replaced before the second is made.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Because of the replacement, the two choices are independent.
So P(good,good)=P(good)*P(good)=0.88*0.88=0.7744...
Cheers,
Stan H.