Probability Of Pulling A Red Marble After A Blue Marble

Find the probability of the following event p red then red.

Probability of pulling a red marble after a blue marble. She chooses one sock at random and puts it on. We can still use the multiplication rule which says we need to find p red p blue. We calculated p drawing a non red 455. If we got a red marble before then the chance of a blue marble next is 2 in 4 if we got a blue marble before then the chance of a blue marble next is 1 in 4 this is because we are removing marbles from the bag.

What is the probability of randomly selecting a non blue marble from of the bag. Contains 4 red marbles and 6 blue marbles is 4 10 or 2 5 then the probability of notpicking a red marble is equal to 1 4 10 6 10 or 3 5 which is also the probability of picking a blue marble. Let s do a couple of exercises from our probability one module. Given the only two events that are possible in this example picking a red marble or.

Andrea has 8 blue socks and 4 red socks in her drawer. The first red a jar contains 30 red marbles 12 yellow marbles 8 green marbles and 5 blue marbles you draw and replace marbles 3 times. So they say the probability i ll just say p for probability. She then chooses another sock without looking.

P red 2 9. 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. We will call these event 1 and 2. So the next event depends on what happened in the previous event and is called dependent.

How to calculate probability without replacement or dependent probability. What is the probability the third marble is the first red marble. So that s my bag and we re going to assume that it s a transparent bag so it looks like a. To find the probability of pulling out a blue marble we just divide the amount of blue marbles we have by the total marbles in the jar.

What is the probability of pulling a blue marble out after two red marbles have been pulled out. A person pulls a red marble out of a bag that has 4 blue and 8 red marbles and does not replace it. The probability of picking a yellow marble. So we have a bag with 9 red marbles 2 blue marbles and 3 green marbles in it.

What is the probability of pulling out a red marble followed by a blue marble. So let s draw this bag here. So what we do is figure out the probability of pulling out a blue marble and then the probability of pulling out another after not replacing the first. This means the first two are not red.

Is the probability of pulling the second red marble out dependent on pulling the first red marble out.