The Probability That The Second Marble Is Blue

If we got a blue marble before then the chance of a blue marble next is 1 in 4.

The probability that the second marble is blue. Now find the probability that the second marble is blue this is p b. A bag contains red and blue marbles. One marble is removed from the box and then replaced. The probability of selecting a red marble on the first draw is 0 5.

B find the probability that one orange marble and one blue marble are drawn in either order. The probability that the first marble is red is 5 20 or 1 4. You can put this solution on your website. P b 1 1 4.

And the probability that the third marble is white is 11 18 because we ve already chosen 2 marbles. What is the probability that the first marble is blue and the second marble is green. The probability p a b is the probability that the first marble is green and the second marble is blue. 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. P b 2 p b 2 b 1 p b 2 g 1 p b 2 r 1 thus. Two marbles are drawn without replacement. 1 4 c 1 7 or d.

So i got rd 1 4 and blue 1 7 so 1 4 1 7 1 28 but my choices are 1 8 b. The probability is. 2 7 so i am not sure what i am doing wrong. If we got a red marble before then the chance of a blue marble next is 2 in 4.

P a b 7 12 5 11. This is because we are removing marbles from the bag. 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 the second marble being blue is 4 19 since we have 1 less marble but not 1 less blue marble.

6 orange marbles 8 blue marbles and 6 white marbles. P b 2 b 1 2 11. Another marble is drawn from the box. Answer by stanbon 75887 show source.

C find the probability that two white marbles are drawn. The second marble is blue given the first marble is red. P b 2 3 12 2 11 4 12 3 11 5 12 3 12. Probability of the first marbel being blue is.

The probability is. A draw a tree diagram with probabilities to represent the sample space.