Vocabulary Terms
The measure of the likelihood that an event will occur.
PROBABILITY
What is the probability of flipping a coin and landing on heads?
1/2 or 50%
A bag contains:
• 5 red marbles. • 6 blue marbles
• 3 green marbles. • 4 black marbles
• 2 yellow marbles
What is the probability of drawing a green or yellow marble?
5/20 = 1/4
At the start of the month, the value of an investment was $48.45. By the end of the month, the value of the investment changed by a loss of $13.80. What was the value, in dollars, of the investment at the end of the month?
34.65
List out as many numbers you can of PI.
3.14159265359
The result of a single trial of a probability experiment.
OUTCOME
You have 1 red marble, 3 green marbles, and 4 blue marbles. What is the probability of choosing a green marble.
3/8
Gabriel has these cans of soup in his kitchen cabinet.
• 2 cans of tomato soup
• 3 cans of chicken soup
• 2 cans of cheese soup
• 2 cans of potato soup
• 1 can of beef soup
What is the probability of choosing a can or chicken or beef soup?
4/10 = 2/5
Simplify the expression:
1/4(8 - 6x + 12)
-3/2x + 5
A grandfather, two fathers and two sons went to the movie theater together and everyone bought one movie ticket each. How many tickets did they buy in total?
3 (the grandfather is also a father and the father is also a son)
A list of all the possible outcomes.
SAMPLE SPACE
You have 5 red marbles, 3 green marbles, and 6 blue marbles. What is the probability of not picking a blue marble? MUST SIMPLIFY!!!
8/14 = 4/7
A bag contains:
• 5 red marbles. • 6 blue marbles
• 3 green marbles. • 4 black marbles
• 2 yellow marbles
A marble will be drawn from the bag and replaced 50 times. What is a reasonable prediction for the number of times a blue marble will be drawn? (Hint: Use a Proportion)
15 marbles
Jessica rented 1 video game and 3 movies for a total of $11.50. The video game cost $4.74 to rent. The movies cost the same amount each to rent. What amount, in dollars, did Jessica pay to rent each movie?
$2.25
If you buy a rooster for the purpose of laying eggs and you expect to get three eggs each day for breakfast, how many eggs will you have after three weeks?
0, roosters don't lay eggs
When all the probabilities in a probability model are not equal to each other, it is called...
NON-UNIFORM PROBABILITY MODEL
A spinner is numbered 1 - 8, each space is of equal size. What is the probability of spinning and landing on a number that is a multiple of 2?
4/8 = 1/2
You flipped a coin 40 times and landed on tails 22 times. What is the percent error for flipping a coin and landing on tails?
10%
Do the given two equations have the same answer? SHOW YOUR WORK TO PROVE.
Equation 1: -0.5x - 4 = 1.5
Equation 2: -0.5(x - 4) = 1.5
No, they do not. Equation 2 requires distribution, which will change the equation.
A duck was given $9 and a spider was given $36, Based off of this information, how much money would be given to a cat?
$18 ($4.50 per leg)
How far off the experimental probability is from the theoretical probability.
PERCENT ERROR
There are 5 gray, 4 red, 2 green, and 2 navy marbles in a hat. Your friend pulled out a green marble and lost it. What is your probability of pulling a red marble?
4/12 = 1/3
A drawer contains 15 T-shirts. There are 4 blue, 9 green, and 2 black T-shirts. A T-shirt is grabbed at random from the drawer. Which statement(s) correctly describe the likelihood of an event? Select True or False
a. It is unlikely that a black T-shirt will be selected.
b. It is guaranteed that a green T-shirt will be selected.
c. It is impossible that a red T-shirt will be selected.
True, False, True
A store owner paid $15 for a book, but she is marking UP the price by 40%. How much is she selling the book for?
$21
A little boy goes shopping and purchases 12 tomatoes. On the way home, all but 9 get mushed and ruined. How many tomatoes are left in a good condition?
9