Category 1
What is the probability of randomly selecting an odd number from the numbers 1 -15?
8/15
Twelve students have an equally likely chance of being selected in a drawing at school. Eight are 7th graders and four are 8th graders. What is the probability that an 8th grader will be selected?
1/3
The probability of a spinner landing on yellow is 1/4. What does 3/4 represent?
Complement of yellow/whatever is not yellow
In a game, the player wins if he rolls a 4 on a number cube. If the number cube is rolled 24 times, what is a reasonable prediction for the number of unsuccessful rolls?
20
A health study of 540 adults found that only 7 in 20 adults get enough sleep each night. Based on the results of the sample, how many adults got enough sleep?
189
Two coins are flipped. What is the probability that both coins land on heads?
1/4
Two number cubes are rolled sequentially. What is the probability that the first number cube shows a five and the other number cube shows an even number?
1/12
There are five candies in a bag. Three are chewy, and two are chocolate. You draw a candy, do not replace it, and then draw another. What is the probability of choosing two chocolate candies?
1/10
The letters in the word AUGUST are placed in a bag. What is the probability of selecting a U?
1/3
Marty can go to one movie on either Friday or Saturday. He will be able to choose either a comedy or an action movie. Which list shows all the possible outcomes of one movie on one day?
Comedy, Friday
Comedy, Saturday
Action, Friday
Action, Saturday
At a school assembly, 3 out of the first 10 students were wearing spirit wear. Based on this information, if 400 students were at the assembly, then how many students could be expected to have on spirit wear?
120
A coin is flipped, and a standard number cube is rolled. Create a tree diagram to represent the sample space.
Heads branches to 1, 2, 3, 4, 5, 6
Tails branches to 1, 2, 3, 4, 5, 6
There are five marbles in a bag. Three are green and two are yellow. You draw a marble, replace it, and then draw another. What is the probability of choosing two yellow marbles?
4/25
The list below shows the different pizzas sold by noon at a local pizza shop.
Pepperoni: 11
Supreme: 7
Cheese: 6
Hawaiian: 3
Based on these results, if 189 pizzas were sold by the end of the day, how many pizzas could be expected to be cheese?
42 cheese pizzas
4/10 or 2/5