The Probability That The Second Marble Is Blue

And the probability that the third marble is white is 11 18 because we ve already chosen 2 marbles. If we got a blue marble before then the chance of a blue marble next is 1 in 4. P b 2 p b 2 b 1 p b 2 g 1 p b 2 r 1 thus.

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Two marbles are drawn without replacement.

The probability that the second marble is blue.

The probability is. So the next event depends on what happened in the previous event and is called dependent. 2 marbles are drawn without replacement from a box of 3 white 2 green 2 red and 1 blue marble. Answer by stanbon 75887 show source.

2 7 so i am not sure what i am doing wrong. A bag contains red and blue marbles. Because the first marble is replaced the size of the sample space 9 does not change from the first drawing to the second so the events are independent. The probability of selecting a red marble on the first draw is 0 5.

A draw a tree diagram with probabilities to represent the sample space. 1 4 c 1 7 or d. P b 2 b 1 2 11. The probability of selecting a red marble and then a blue marble is 0 28.

6 orange marbles 8 blue marbles and 6 white marbles. You can put this solution on your website. Probability of the secod marbel being blue given the first one was blue is. The second marble is blue given the first marble is red.

The probability that the first marble is red is 5 20 or 1 4. So i got rd 1 4 and blue 1 7 so 1 4 1 7 1 28 but my choices are 1 8 b. P b 1 1 4. P a b 7 12 5 11.

The probability is. C find the probability that two white marbles are drawn. One marble is removed from the box and then replaced. Now find the probability that the second marble is blue this is p b.

P b 2 3 12 2 11 4 12 3 11 5 12 3 12. The probability of the second marble being blue is 4 19 since we have 1 less marble but not 1 less blue marble. B find the probability that one orange marble and one blue marble are drawn in either order. The probability of the intersection of a and b is.

What is the probability that the first marble is blue and the second marble is green. If we got a red marble before then the chance of a blue marble next is 2 in 4. Another marble is drawn from the box. The probability p a b is the probability that the first marble is green and the second marble is blue.

This is because we are removing marbles from the bag. Probability of the first marbel being blue is.

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