Probability Quick Check

Find the theoretical probability that the spinner below lands on the letter B. Write your answer as a fraction in simplest form. Use the "/" key for a fraction (ex. 1/15).

Tags

CCSS.7.SP.C.7B

The sides of a fair number cube are labeled 1, 2, 3, 4, 5, and 6. What is the theoretical probability that the number cube will land with the number 5 facing up? Use the "/" key for a fraction (ex. 1/15).

Tags

CCSS.7.SP.C.7A

A school principal wants to place a gift card inside one randomly selected 7th grade student’s locker from those shown. What is the theoretical probability of the student’s locker having a number that is a multiple of 3? Use the "/" key for a fraction (ex. 1/15).

Tags

CCSS.7.SP.C.7B

Tamara rolled a fair number cube with sides labeled 1, 2, 3, 4, 5, and 6. The table shows the results of rolling the fair number cube 20 times. What is the percentage of the experimental probability that the number landing face up is a five. Make sure you place the "%" at the end.

Tags

CCSS.7.SP.C.6

A bag contained one red, one blue, and one green ball. Each ball in the bag is the same size and shape. Mr. Smith selected a ball from the bag without looking, recorded the color, and returned the ball to the bag. He did this four times, and the results were red, green, blue, green. Determine the experimental probability of Mr. Smith selecting a red ball from the bag. Use the "/" key for a fraction (ex. 1/15).

Tags

CCSS.7.SP.C.6

A bag of equally-sized marbles contains 6 green marbles, 8 blue marbles, and 10 red marbles. Amber reached in the bag picked a marble without looking, recorded its color, and returned the marble to the bag. Her data is recorded in the table. Based on these results, which color marble has an experimental probability equal to its theoretical probability?

• Green

• Blue

• Red

Matthew has a spinner that is divided into three congruent sections. He spins the arrow on the spinner 100 times and records the section on which the arrow lands. His results are shown in the table. Based on these results, is the theoretical probability of the arrow landing on the unshaded section greater than, less than, or equal to the experimental probability of the arrow landing on the unshaded section?

• greater than

• less than

• equal to

Ashley rolled a fair number cube. The results of 10 rolls are shown. Ashley will roll the fair number cube an additional 1000 times. Should she expect the experimental probability of the fair number landing with a 4 facing up to increase or decrease?

• increase

• decrease