Quiz about Probability and Predictions STAAR 7.6ACDEHI

Question 1

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?

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 2

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

Accepted Answer

Option C is correct

Answer

A.

Answer

B.

Answer

D.

Question 3

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?

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 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?

Accepted Answer

D 48

Answer

A 60

Answer

B 87

Answer

C 39

Question 5

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?

Accepted Answer

D 1,120

Answer

A 80

Answer

B 168

Answer

C 1,280

Question 6

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?

Accepted Answer

B 45

Answer

A 75

Answer

C 15

Answer

D 40

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

Accepted Answer

J 35

Answer

F 14

Answer

G 65

Answer

H 7

Question 8

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?

Accepted Answer

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.

Answer

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.

Answer

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.

Answer

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.

Question 9

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?

Accepted Answer

J 3/7

Answer

F 4/7

Answer

G 3/4

Answer

H 1/4

Question 10

The table shows the types of movies and the number of DVDs rented by customers at a store one day. Based on the data in the table, what is the probability that a random customer will NOT rent a drama?

Accepted Answer

C 4/5 because the probability of renting a drama is 1/5

Answer

A 1/4 because the probability of renting a drama is 3/4

Answer

B 3/4 because the probability of renting a drama is 1/4

Answer

D 1/5 because the probability of renting a drama is 4/5

Question 11

A survey of visitors at a national park was conducted to determine the preferred activity of each visitor to the park. Each visitor chose one activity. The survey results are shown in the table. Based on this information, which prediction about the preferred activity for the next 200 visitors to the park is the most reasonable?

Accepted Answer

D The number of visitors who prefer camping will be 2 times the number of visitors who prefer water sports.

Answer

A The number of visitors who prefer water sports will be 5 more than the number of visitors who prefer biking trails.

Answer

B The number of visitors who prefer hiking trails will be 8 more than the number of visitors who prefer water sports.

Answer

C The number of visitors who prefer camping will be 15 times the number of visitors who prefer hiking trails.

Question 12

The table shows the numbers of different types of pies sold at a bakery during one day. Based on the results in the table, which statement about the pies sold at this bakery during one week is NOT true?

Accepted Answer

C It is more likely for an apple or lemon pie to be sold than for a pecan or chocolate pie to be sold.

Answer

A It is two times as likely for a chocolate pie to be sold as for a lemon pie to be sold.

Answer

B It is equally likely for an apple or pecan pie to be sold as for a chocolate pie to be sold.

Answer

D It is less likely for a pecan pie to be sold than for a lemon pie to be sold.

Question 13

The table shows the number of bottles of different kinds of juice sold at a cafeteria on Monday. If the cafeteria has 80 customers on Tuesday, which prediction for Tuesday is NOT supported by the data in the table?

Accepted Answer

G The number of bottles of apple juice sold will be 6 times the number of bottles of cranberry juice sold.

Answer

F The number of bottles of cranberry juice sold will be 6 more than the number of bottles of pineapple juice sold.

Answer

H There will be a total of 50 bottles of orange and cranberry juice sold.

Answer

J The difference between the number of bottles of apple juice sold and the number of bottles of pineapple juice sold will be 14.

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