SOLUTION: In a large bag of marbles, 25% of them are red. A child chooses 4 marbles from this bag. If the child chooses the marbles at random, what is the chance that child gets exactly thre
Question 1156879: In a large bag of marbles, 25% of them are red. A child chooses 4 marbles from this bag. If the child chooses the marbles at random, what is the chance that child gets exactly three red marbles. Answer by ikleyn(52848) (Show Source): You can put this solution on YOUR website! .
Of 4 marbles, 3 are red; one is not red.
The probability is P = = = 0.046875. ANSWER
It is the binomial type probability distribution.
The number of trial n= 4; the probability of the success trial is 0.25, and the number of success trial k = 3.