Blue Andred Marbles Bag Problem

A bag contains 4 red marbles and 2 blue marbles.

Blue andred marbles bag problem.

Find an online tutor now choose an expert and meet online. Let x the number of draws. The sample space for the second event is then 19 marbles instead of 20 marbles. 2 making a table 6 rp 3a 6 ee 7 we are given that for every three blue marbles in the bag there are two red marbles.

If the first marble drawn was a red marble what is the chance that the second draw is a blue marble. What fraction of the marbles in the bag are blue. A bag has 16 blue 20 red and 24 green marbles. With our new ratio of 3 4 for blue marbles to red marbles this means that 4 out of every 7 marbles in the bag are red.

So they say the probability i ll just say p for probability. So frac 4 7 of the marbles are now red. This is called probability without replacement or dependent probability. Answer by fombitz 32378 show source.

And so this is sometimes the event in question right over here is picking the yellow marble. Get a free answer to a quick problem. How many red marbles are there in the bag. A if you repeated this experiment a very large number of times on average how many draws would you make before a blue marble was drawn.

For example a marble may be taken from a bag with 20 marbles and then a second marble is taken without replacing the first marble. Let x red marbles. No packages or subscriptions pay only for the time you need. Initially there were the same number of blue marbles and red marbles in a bag.

How many blue marbles are there. A bag has 3 blue marbles and 4 red marbles. Most questions answered within 4 hours. John took out 5 blue marbles and then there were twice as many red marbles as blue marbles in the bag.

Find the probability of pulling a yellow marble from a bag with 3 yellow 2 red 2 green and 1 blue i m assuming marbles. You reach into the bag and draw a marble and then draw another marble without replacing the first one. You draw a marble at random without replacement until the first blue marble is drawn. What is the chance that the first draw is a red marble.

Since the first marble is replaced before the second marble is drawn the colour of the second marble is independent of the colour of the first marble. Initially blue marbles red marbles x then john. A bag contains blue marbles and red marbles 71 in total.