Take a Chance STAAR Review

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?

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

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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?

• 80

• 168

• 1,280

• 1,120

Tags

CCSS.7.RP.A.3

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 outcomes be exactly two of the coins showing heads?

• 60

• 87

• 39

• 48

A bag contains:

5 red marbles, 6 blue marbles, 3 green marbles, 4 black marbles, and 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 marbles will be drawn?

• 14

• 65

• 7

• 35

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?

• 75

• 45

• 15

• 40

The spinner shown is divided into congruent sections that are labeled 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?

• $\frac{4}{7}$

• $\frac{3}{4}$

• $\frac{1}{4}$

• $\frac{3}{7}$

The table shows the types of movies and the number of DVDs rented by customers at a store in one day.

Based on the data in the table, what is the probability that a random customer will not rent a drama?

• $\frac{1}{4}$ , because the probability of renting a drama is $\frac{3}{4}$

• $\frac{3}{4}$ , because the probability of renting a drama is $\frac{1}{4}$

• $\frac{4}{5}$ , because the probability of renting a drama is $\frac{1}{5}$

• $\frac{1}{5}$ , because the probability of renting a drama is $\frac{4}{5}$

A store manager receives a delivery of 2 boxes of lightbulbs. Each box contains 25 lightbulbs. The store manager tests all the lightbulbs and finds that 2 of them are defective. Based on these results, what can the store manager predict about the next delivery of lightbulbs?

• a delivery of 3 boxes will contain 3 more defective lightbulbs than a delivery of 2 boxes.

• A delivery of 4 boxes will contain two more defective lightbulbs than a delivery of 2 boxes

• A delivery of 5 boxes will contain 10 more defective lightbulbs than a delivery of 2 boxes.

• A delivery of 6 boxes will contain 3 more defective lightbulbs than a delivery of 2 boxes.

Tags

CCSS.5.OA.B.3

Mari bought 6 packets of tomato seeds. Each packet contained 24 seeds. She planted 1 packet of seeds, and 15 seeds sprouted.

Which statement about the seeds in the remaining packets is best supported by this information?

• No more than 50 seeds will sprout

• Between 50 and 100 seeds will sprout

• At least 100 but no more than 120 seeds will sprout

• All 120 seeds will sprout