Probability Review

An ice cream shop makes sundaes with chocolate or vanilla flavors and sprinkles, fudge or caramel toppings. Which tree diagram shows all possible flavor and topping combinations?

• A

• B

• C

• D

A spinner with four equal sections colored red, blue, green and yellow was spun 50 times and the results are shown below. Based on the data, what is the experimental probability that the next spin will land on a blue or a green section?

• $\frac{10}{50}$

• $\frac{15}{50}$

• $\frac{1}{2}$

• $\frac{1}{5}$

Violet spins the spinner records it and then spins the spinner again. What is the probability that the spinner will land on 3 on the first spin and then an odd number on the second spin?

• $\frac{1}{8}$

• $\frac{1}{16}$

• $\frac{4}{8}$

• $\frac{1}{2}$

A coach gathered data about the number of goals that his two teams scored this season. The box plots below show the data for Team A and Team B.

Based on the box plots, which statement is true?

• The interquartile range for team A is twice the interquartile range for team B.

• The interquartile range for Team B is two goals less than the interquartile range for Team A.

• The range for Team B is twice the range for Team A.

• The range for Team A is two less than the range for Team B.

Is the tree diagram below correct for the following situation?

all of the possible outcomes for spinning a spinner with three sections red, green and blue and then tossing a coin.

• Yes

• No

One tile is randomly chosen from a bag containing tiles numbered 1 - 8. What is the probability of choosing a 4 or a 5?

• $\frac{1}{8}$

• $\frac{4}{8}$

• $\frac{1}{4}$

• $\frac{5}{8}$

Kaitlin spins the spinner records it and then spins the spinner again. What is the probability that the spinner will land on a number greater than 5 on the first spin and then an even number on the second spin?

•  $\frac{3}{16}$ 

•  $\frac{7}{8}$ 

•  $\frac{3}{8}$ 

•  $\frac{1}{4}$ 

Mallory went to the store to buy an outfit. When she got to the store she had to make some choices. For a shirt, she could choose a purple, blue, black or white. For pants she could choose jeans or leggings. For shoes she could choose sneakers or boots. What are the total number of different outcomes mallory could have bought?

• 6

• 8

• 12

• 16

Data was gathered about the height, in inches, of girls and boys from a middle school. The box plots below show this data. Based on the box plots, which statement is true?

• The interquartile range of the height for boys is three times the interquartile range of the height for girls.

• The interquartile range of the height for girls is three less than the interquartile range of the height for boys.

• The range of the height for girls is twice the range of the height for boys.

• The range of the height for boys is twice the range of the height for girls.

The cafeteria staff at Woodland Middle School is creating a menu for the students. They will have a choice of cereal, bagel or fruit for breakfast. For lunch, they can choose pizza, hamburger, or a sandwich. For a snack they can choose chips or a cookie. What are the total number of different outcomes students could have ordered?

• 6

• 8

• 12

• 18