Table of Contents
- 1 What is the probability of drawing a red ball?
- 2 How many ways are there to pick 3 red balls out of the jar assume that the order you pick the balls out does not matter but it does matter which 3 red balls you pick?
- 3 What is the probability that we get the red ball exactly 3 times?
- 4 What is the probability of two consecutive balls of the same colour?
- 5 What do the branches on the probability table represent?
- 6 How many red and yellow balls are randomly drawn without replacement?
What is the probability of drawing a red ball?
The chance of drawing a red ball is 2/6 = 1/3. The chance of drawing a green ball is 4/6 = 2/3.
How many ways are there to pick 3 red balls out of the jar assume that the order you pick the balls out does not matter but it does matter which 3 red balls you pick?
There are a total of (123) different ways of choosing 3 balls.
What is the probability of getting a non red ball from a bag containing 4 Red 5 blue and 3 black balls?
8/12=2/3 is the probability of getting a non red ball.
What is the probability that we get the red ball exactly 3 times?
1/20
There is only one way to get exactly 3 red. Recall n(S)=20 so P(exactly 3 red)=1/20.
What is the probability of two consecutive balls of the same colour?
For two red balls, multiply along the tree: A bag contains 12 balls. 3 are red and 9 are blue. A ball is drawn at random, and NOT replaced in the bag. By drawing a probability tree, or otherwise, show that the probability of drawing two consecutive balls of the same colour is 21 33.
How do you make a probability tree diagram?
1 Step 1: Draw the Probability Tree Diagram and write the probability of each branch. (Remember that the objects are not… 2 Step 2: Look for all the available paths (or branches) of a particular outcome. 3 Step 3: Multiply along the branches and add vertically to find the probability of the outcome. More
What do the branches on the probability table represent?
From the dot, branches are drawn to represent all possible outcomes of the event. The probability of each outcome is written on its branch. A bag contains 3 black balls and 5 white balls. Paul picks a ball at random from the bag and replaces it back in the bag.
How many red and yellow balls are randomly drawn without replacement?
Two balls are randomly drawn without replacement. Calculate the probability of drawing one red ball and one yellow ball. Try the free Mathway calculator and problem solver below to practice various math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.