Marble Probability Problems

So they say the probability i ll just say p for probability.

Marble probability problems.

The probability of picking a yellow marble. A two digit number is written at random. So in our example the probability of drawing a white marble is 11 20. A bag contains 50 marbles 28 red ones and 22 blue ones.

The probability of selecting a red marble and then a blue marble is 0 28. There are 55 marbles 25 of which are not red p getting a color other than red p 25 55 455 probability of this happening 3 times in a row is. What is the probability that you pick 3 green no red 1 of each at least 1 blue marble if a jar contains 5 blue 3 green and 4 red marbles. Change the number of marbles of different colors in the boxes and guess the probability of drawing a red blue or yellow marble.

And so this is sometimes the event in question right over here is picking the yellow marble. Divide 11 number of positive outcomes by 20 number of total events to get the probability. Hot network questions what standards should i apply when evaluating a phd thesis from a weaker university. 11 20 0 55 or 55.

So the probability of drawing a white marble can now be approached like any other single event probability calculation. Therefore we can classify these two events as independent events. Probability examples a jar contains 30 red marbles 12 yellow marbles 8 green marbles and 5 blue marbles what is the probability that you draw and replace marbles 3 times and you get no red marbles. Because the marble is replaced the two events are independent of each other.

If a marble is drawn from the jar at random what is the probability that this marble is white. Hence the probability of event e occurring is given by p e 4 52 1 13 question 8 a jar contains 3 red marbles 7 green marbles and 10 white marbles. A a red marble. Determine the probability that the number will be.

A an odd number. A bag contains red and blue marbles. What is the probability of her passing the second test given that she has passed the first test. And in our case.

C a red marble after a blue marble had been picked first. Once you have decided on your answers click the answers checkboxes to see if you are right. And we write it as probability of event a and event b equals the probability of event a times the probability of event b given event a let s do the next example using only notation. The probability of selecting a red marble on the first draw is 0 5.

This activity shows the classic marble example of elementary probability. 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. A marble is picked at random from the bag. B a blue marble.

Notice that the problem states that a marble is chosen and then replaced. So the probability of getting 2 blue marbles is. P b a is also called the conditional probability of b given a.