Unit 7 Review

Molly makes 70% of her free throws. The random numbers below represent 20 trials of a simulation of two free throws. Let the numbers 0 to 6 represent a successful free throw and 7 to 9 represent a missed free throw. Based on the simulated results, the probability that Molly make both free throws is what?

38 38 21 50 64 71 66 42 47 90

80 92 29 98 27 87 89 89 93 03

• 30%

• 55%

• 70%

• 25%

Tags

CCSS.7.SP.C.8C

About 50% of the people surveyed in a certain county work for a small business. A random number generator was used to simulate the results of the next four people surveyed.

The numbers 0 to 4 represent people who work for a small business, and the numbers 5 to 9 represent people who do not work for a small business.

6411 0501 7582 0403 3074 7383 5250 2235 0803 3750

7694 9225 7121 4493 7596 8223 1288 8121 7652 3154

Based on the simulated results show above, what is the probability that at LEAST one of the next four people surveyed works for a small business?

• 95%

• 15%

• 5%

• 80%

Tags

CCSS.7.SP.C.8C

After many studies, a researcher finds that the probability that a word recognition app correctly interprets a handwritten word is 9/10. Which statement is true?

• It is impossible that the handwritten word will be correctly interpreted.

• It is unlikely that the handwritten word will be correctly interpreted.

• It is likely that the handwritten word will be correctly interpreted.

• It is certain that the handwritten word will be correctly interpreted.

Tags

CCSS.7.SP.C.5

A bag contains 8 letter tiles of the same size. The tiles are labeled either A, B, C, D, E, or F. Three of the tiles are labeled C. If Corey selects 1 tile from the bag without looking, is the selection of letters fair?

• Fair

• Not Fair

Tags

CCSS.HSS.MD.B.6

CCSS.HSS.MD.B.7

A city traffic light cycles through green, yellow, and red in 60 seconds. It is yellow for 3 seconds. Which term best describes the likelihood of a car coming to the light when it is yellow?

• Impossible

• Unlikely

• Likely

• Certain

• Just as likely as not likely

Tags

CCSS.7.SP.C.5

Based on the records for the past several seasons, a sports fan believes the probability that the red team will win a given game is 3/5. The fan also believes the probability that the blue team wins a given game is 11/20. As compared to the blue team, how man more games should the fan expect the red team to win during a 180-game season?

• 9 more games

• 10 more games

• 40 more games

• 25 more games

Tags

CCSS.7.RP.A.3

In a survey, 125 people were asked to choose one card out of five cards labeled 1 to 5. The results are shown in the table. What is the theoretical probability of drawing a card with the number 1?

• 20%

• 10%

• 5%

• 50%

Tags

CCSS.7.SP.C.6

In a survey, 125 people were asked to choose one card out of five cards labeled 1 to 5. The results are shown in the table. What is the experimental probability of choosing a card with the number 1?

• 12%

• 20%

• 7%

• 67%

Tags

CCSS.7.SP.C.6

Mrs. Snodgrass is a baller and she is the best player on her basketball team makes 75% of all free throws. Based on the experimental probability, estimate the number of free throws Mrs. Snodgrass will make in her next 40 attempts. (Hint: Use a proportion!)

• 30 free throws

• 28 free throws

• 26 free throws

• 75 free throws

Tags

CCSS.7.SP.C.6

A box has 3 one-dollar bills, 2 five-dollar bills, 2 ten-dollar bills, and 1 twenty-dollar bill. A student selects one bill from the box at random. What is the sample space?

• {$1, $1, $1, $5, $5, $10, $10, $20}

• {One-dollar bill, five-dollar bill, ten-dollar bill, twenty-dollar bill}