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Definitions
Compound Events
Fairness
Single Events
Predictions
100
What does the word fair mean?
Both opponents have the same chance of winning.
100
A die is rolled. Find the probability of rolling a 1 or 2.
2/6 or 1/3
100
Two players are flipping a penny to see who gets to go first in their game. Player one gets to go first if they flip heads, and player two gets to go first if they flip tails. Is this game fair, why or why not?
Fair, because they both have an equal chance of flipping their respective side.
100
On a 6 sided dice, labeled 1-6, what is the probability of rolling a 2? Show me in a fraction.
1/6
100
You and a friend are flipping a penny. If you flip the penny 200 times, about how many times will the penny land heads up?
About 100 times.
200
What does certain mean?
You are 100% sure.
200
Two coins are tossed. Find the probability that the coins show two heads or one tail and one head.
3/4 or 75%
200
Two players are playing a game, with a dice, with the numbers 1-6 on it. Player 1 earns a 2 points if they roll a 1,2, and 3. Player 2 earns a point if they roll a 2, 3, and 4. Is this game fair why or why not?
Unfair, because player 1 earns double the points everytime they roll one of their numbers.
200
What is the probability of rolling an even number on a 6 sided dice labeled with the numbers: 1, 3, 5, 7, 9, 11? Show me in a fraction.
0/6
200
You have a spinner divided into 5 equal slices. Each slice is a different color. If you spin the spinner 290 times, about how many times would you get each color.
About 58 times each.
300
What does unlikely mean?
It could happen, but probably won't. 49% or less chance.
300
Two dice are rolled. Find the probability that the sum of the numbers is not greater than 5.
10/36 or 5/18 or 27.8 %
300
Two players are playing a game, with a dice, with the numbers 1-6 on it. Player 1 earns a point if they roll a 1,2, and 3. Player 2 earns a point if they roll a 2, 3, and 4. Is this game fair why or why not?
Fair, because they both have a three out of 6 chance of scoring a point.
300
What is the probability that a 12 sided dice will land with an odd number up, if the dice is labeled with the numbers 1-12 on it? Show me a fraction.
6/12
300
If you were to roll a 6 sided dice, labeled 1-6, 120 times. About how many times would you roll each number?
About 20 times each.
400
What does outcome mean?
the result of each trial of an experiment.
400
From a standard deck of cards. Find the probability of getting a 2, a 5 or a face card.
20/52 or 10/26 or 5/13 or 38.5 %
400
Two players are playing a game, with a dice, with the numbers 1-6 on it. Player 1 earns a point if they roll a 1,2, 3,4, 5,and 6. Player 2 earns a point if they roll any number. Is this game fair why or why not?
Fair, because they both will score no matter what number is rolled.
400
There are 22 students in my homeroom. 10 of them are boys. If I were to pick a Popsicle stick, what is the probability, in fraction form, that I would pick a girl?
12/22
400
If you were to roll a 12 sided dice, labeled 1-12, 120 times. About how many times will you roll each number?
You will roll each number about 10 times.
500
What does sample space mean?
The set of all possible outcomes of an experiment.
500
From a standard deck of cards (52) P( black and number card)
18/52 or 9/26
500
Two players are playing a game, with a dice, with the numbers 1-6 on it. Player 1 earns a point if they roll a 1,3, and 5. Player 2 earns a point if they roll any number. Is this game fair why or why not?
Unfair, because player 2 will score everytime.
500
A basketball player has made 96 free throws in his last 128 attempts. . 1. What is the probability he will be successful in his next attempt?.
1. 96/128 or 48/64 or 24/32 or 12/16 or 6/8 or 3/4
500
A basketball player has made 96 free throws in his last 128 attempts. . How many successful free throws do you predict this player will make in 500 attempts?
375