Probability and Predictions STAAR 7.6ACDEHI

A student will spin two spinners in an experiment. The tree diagram shows all possible outcomes of the experiment. Which sample space is described by this tree diagram?

• 
• 
• 
• 

Jack tossed a coin three times. Which tree diagram shows all the possible outcomes of the coin landing heads up or tails up?

• 
• 
• 
• 

Bailey will roll a number cube and flip a coin for a probability experiment. The faces of the number cube are labeled 1 through 6. The coin can land on heads or tails. If Bailey rolls the number cube once and flips the coin once, which list contains only the outcomes in which the number cube lands on a number greater than 4?

• 
• 
• 
• 

Vincent flipped three coins during a probability experiment. The outcomes of the first 40 trials are shown in the table. Based on the information in the table, in how many of the next 120 trials will the outcome be exactly two coins showing heads?

• A 60

• B 87

• C 39

• D 48

A study of a population of 1,200 frogs revealed that 12 out of every 180 frogs in the population have spots on their back. Based on the results of this study, how many frogs in the population do NOT have spots on their back?

• A 80

• B 168

• C 1,280

• D 1,120

At an assembly, 7 out of the first 10 students who entered the gym were carrying a backpack. Based on this information, if 700 students were at the assembly, how many students could be expected to be carrying a backpack?

The spinner shown has eight congruent sections. The spinner is spun 120 times. What is a reasonable prediction for the number of times the spinner will land on an even number?

• A 75

• B 45

• C 15

• D 40

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 100 times. What is a reasonable prediction for the number of times a green or black marble will be drawn?

• F 14

• G 65

• H 7

• J 35

A teacher has a container of paper clips. She will randomly select one paper clip from the container.

-The container has 8 pink paper clips.

-The container has 14 purple paper clips.

-The container has 12 yellow paper clips.

-The container has 16 blue paper clips.

Which statement is TRUE?

• A. The probability of selecting a purple paper clip is 3/4, and the probability of selecting a paper clip that is not purple is 1/4.

• B. The probability of selecting a purple paper clip is 1/4, and the probability of selecting a paper clip that is not purple is 3/4.

• C. The probability of selecting a purple paper clip is 18/25, and the probability of selecting a paper clip that is not purple is 7/25.

• D. The probability of selecting a purple paper clip is 7/25, and the probability of selecting a paper clip that is not purple is 18/25.

The spinner shown is divided into congruent sections that are labeled from 1 through 7. If the spinner is spun one time, what is the probability of the arrow NOT landing on a section labeled with an odd number?

• F 4/7

• G 3/4

• H 1/4

• J 3/7