SOLUTION: A bag contains six green marbles and nine black marbles. A marble is selected and
returned to the bag. This process continues until a marble has been drawn 5 times.
What is the p
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returned to the bag. This process continues until a marble has been drawn 5 times.
What is the p
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Question 1183309: A bag contains six green marbles and nine black marbles. A marble is selected and
returned to the bag. This process continues until a marble has been drawn 5 times.
What is the probability that
a) Four marbles are green?
b) Three marbles are black? Answer by ikleyn(52893) (Show Source):
You can put this solution on YOUR website! .
A bag contains six green marbles and nine black marbles. A marble is selected and
returned to the bag. This process continues until a marble has been drawn 5 times.
What is the probability that
a) Four marbles are green?
b) Three marbles are black?
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In all, there are 6+9 = 15 marbles.
The probability to select a green marble is = = 0.4 at each single trial.
The probability to select a black marble is = = 0.6 at each single trial.
The problem is about a binomial distribution.
In case (a), the answer is P = = = 0.0768.
In case (b), the answer is P = = = 0.3456.
