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There are six blue balls and four red balls in the pocket. Take out a ball...

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Basic Math

There are six blue balls and four red balls in thepocket. Take out a ball at random, check the color and put it backin the pocket.
1. If you take the ball out until the red one comes out, what isthe probability that the ball will be drawn exactly five times andthe experiment is over?
2. What is the average and variance of the number of times X istaken if the ball is pulled out until the red ball comes out?
3. Repeat the procedure ten times to remove the ball from thepocket. Find the mean and variance of the number of blue ballstaken Y.

Answer & Explanation Solved by verified expert
4.5 Ratings (975 Votes)
There are six blue balls and four red balls in the pocket 1 Here in the initital four pickups we draw one blue ball and in fifth pickup we draw red ball Here we are taking out balls with    See Answer
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