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What is a probability?
The chances of an event occurring.
What is an event in probability?
If the occurrence of something happening.
In a standard deck of 52 cards, what's the chance of drawing a King of hearts?
1/52
In a standard deck of 52 cards, what's the chance of drawing a red king?
1/26
You roll a six sided die, what is the probability you roll a number that is less than a four?
3/6
In a standard 52-card deck of cards, what is the probability of drawing a club on your first draw?
13/52 or 1/4
What is the probability that you roll a 1 or 3 on a die?
2/6 or 1/3
Give an example of a chance experiment with 12 possible outcomes.
Answers can vary
If a die is thrown what is the probability that it will land with a 4 or a 6 facing up?
2/3
An event with a probability of 1 means what?
An event with the probability of 1 means that it will happen.
What is a sample space?
A list of all the possible outcomes of a chance experiment.
What is the probability that you choose "C" from the word CAT and flip a heads on a coin?
1/6
A card is drawn at random from a well-shuffled pack of cards numbered 1 to 12. Find the probability of getting a number divisible by 3.
4/12 or 1/3
How likely is it that Miss Gonzalez gives you a 100% on the test just because?
0%
All probabilities are numbers between ____ and _____
0 and 1
What is an outcome?
A possible result of a chance experiment.
How many outcomes are there by spinning a spinner labeled A,B,C, and D, and then rolling a standard 6-sided number cube?
24 possible outcomes
Define relative frequency
Relative frequency is the number of times an event happens divided by the total number of outcomes that took place in an experiment, known as the number of trials.
A fair coin is tossed 4 times.
Each time it lands heads up.
What is the probability for this to happen?
1/8
Two fair dice are rolled. What is the probability that their sum is greater than four?
5/6
What is the the probability that you draw a queen of hearts from a standard 52-card deck?
1/52
In a standard 52-card deck of cards, what is the probability of drawing a club or a heart?
26/52 or 50%
A ball is drawn from a bag containing 7 red, 3 white, and 6 blue balls.
The probability that it is a red ball is what?
35% or 7/20.
Miss G favorite animal is _____________________
Turtle
A card is drawn at random from a well shuffled pack of 52 playing cards. Find the probability that the drawn card is neither a king nor a queen.
44/52, or roughly 85%.