Khan Academy Probability Marbles

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Khan academy probability marbles. So you have a 3 5 chance 3 5 probability i should say that after that first pick you re kind of still in the game. Khan academy 347 952 views. One two three four five. Learn statistics and probability for free everything you d want to know about descriptive and inferential statistics.

Alexander has nine marbles. Let s get you started with a great explanation of dependent probability using a scenario involving a casino game. If you re seeing this message it means we re having trouble loading external resources on our website. And then you can define an area.

So one two three four five six seven eight nine. The probability of picking a yellow marble. Practice this lesson yourself on khanacadem. So there s a 3 5 probability that the first is green.

And emily has five marbles. And in our case. That you really have to say ok what s the probably that we ll get close to 2. And if you said oh what s the probability that we get someplace between 1 and 3 inches of rain then of course the probability is much higher.

So there s 5 possible outcomes. Full curriculum of exercises and videos. Now let s work this out together. So they say the probability i ll just say p for probability.

Conditional probability visualized using trees. Well the total possible outcomes there s 5 marbles here all equally likely. So pause the video and try to see if you could figure this out. So let s just draw it out.

So we could draw his marbles. P b a is also called the conditional probability of b given a. 3 of them satisfy your event that the first is green. And so this is sometimes the event in question right over here is picking the yellow marble.

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. That the probability of a very super exact thing happening is pretty much 0. So how many more marbles does alexander have than emily. Probability and statistics khan academy duration.