Introduction to Probability- Review for Assessment

The spinner shown has 4 congruent sections. If Mia spins the spinner 36 times, what is a reasonable prediction for the number of times the spinner will land on green?

• 1 time

• 4 times

• 9 times

• 36 times

Tags

CCSS.7.SP.C.6

A study of a population of 500 parrots revealed that 12 out of 25 parrots were red-headed parrots. Based on the results of this study, how many parrots in the population are red-headed parrots?

• 1000

• 240

• 24

• 48

Tags

CCSS.7.RP.A.3

Mark has two piles of candy. Each pile contains 20 pieces.

Pile A- Has 6 jolly ranchers and 14 mints

Pile B- Has 12 jolly ranchers and 8 mints

Which statement is true?

• The probability of randomly selecting a jolly rancher from pile A is greater than the probability of randomly selecting a jolly rancher from Pile B

• The probability of randomly selecting a jolly rancher from pile A is less than the probability of randomly selecting a jolly rancher from pile B

• The probability of selecting a mint from pile A is less than the probability of randomly selecting a mint from pile B

• The probability of randomly selecting a jolly rancher from pile A is more than the probability of selecting a mint from pile B

Leah goes to a candy store and buys some gumballs. The table shows the number of gumballs of each color in the gumball machine. Leah knows that the gumballs come out in a random order. Based on the statement, which statement is true?

• The first gumball is more likely to be yellow than red

• The first gumball is more likely to be green than blue

• The first gumball is five times more likely to be red than yellow

• The first gumball is three times more likely to be blue than yellow.

Tags

CCSS.7.SP.C.7B

The members of the choir are Mario, Christian, Axel, Zayden, Adian, and AJ. They all randomly draw straws to determine which member will sing the National Anthem at the ball game. Which simulation could be used to determine the probability that AJ will sing?

• Toss a coin one time

• Spin a spinner with 4 equal sections one time

• Roll a six-sided fair number cube one time

• Pick a card at random from 10 cards one time

Tags

CCSS.7.SP.C.8C

A bag contains 6 marbles, each a different color. The colors are green, red, blue, white, yellow, and black. Describe and calculate the complement of the event of randomly drawing a red marble.

• P(not red)= 5/6

• P(red)= 1/6

• P(not green)= 1/2

• P(red)= 5/6

Tags

CCSS.HSS.CP.A.1

Marco has not been pairing up his socks and now has a drawer of mismatched socks. He has 8 white socks, 5 black socks, 2 red socks, and 3 blue socks. Suppose Marco reaches into his drawer and randomly selects one sock. What is the probability of him selecting a white sock?

• 4/9

• 8

• 8/10

• 4/5

Tags

CCSS.7.SP.C.7B

Marco has not been pairing up his socks and now has a drawer of mismatched socks. He has 8 white socks, 5 black socks, 2 red socks, and 3 blue socks. Predict the number of black socks that you would get if you chose a sock 54 times.

(a)  

Tags

CCSS.7.SP.C.6

The spinner shown has 4 equal sections. Jack spins the spinner 40 times. The results are shown in the table. Based on the information in the table, in how many of the next 200 trials will the spinner land on red?

• 45

• 9

• 50

• 60

Tags

CCSS.7.SP.C.6

The spinner shown is divided into 6 equal parts. Suppose you were to spin the spinner 72 times. Predict the number of times you would land on an odd number.

(a)  

Tags

CCSS.7.SP.C.6