7th Math Unit 6 Review - Probability

Lyndsey is going to buy a new car. She has the options listed below.
Type: 2-door or 4-door
Interior: leather or cloth
Paint Color: black, white, red, blue
How many different cars are in the sample space?

• 8
• 12
• 24
• 16

A recent survey showed that 64 out of 100 junior high students prefer to monitor their grades electronically instead of receiving a paper copy of their grade report. Which is a good prediction of the number of students who will prefer a paper grade report if there are a total of 450 students?

• 162

• 288

• 286

• 250

A box contains 6 sugar cookies, 2 peanut butter cookies, and 7 chocolate chip cookies. What is the probability of picking a a sugar cookie from the box?

• 40%
• 25%
• 60%
• 84%

Suppose ten tosses of a coin were all heads. If you switch to a new coin, what is the probability that the next coin toss will result in another head?

• 1/1024
• 1/11
• 1/6
• 1/2

Jacob rolled a fair number cube 75 times. He rolled a three 20 times. What is the experimental probability of rolling a three?

• 1/5

• 3/25

• 13/20

• 4/15

Sammy spun a spinner with five congruent sections 125 times. The results are shown below.

Blue: 15

Green: 26

Yellow: 39

Red: 20

Orange: 25

What is the experimental probability of spinning orange?

• 35%

• 25%

• 50%

• 20%

Tyler is doing an experiment in which he rolls a six-sided number cube numbered 1-6 and flips a coin. Which list shows all possible outcomes that include a number greater than 3?

• (1 , heads), (2 , heads), (3 , heads), (4 , tails), (5 , tails), (6 , tails)

• (1 , heads), (2 , heads), (3 , heads), (4 , heads), (5 , heads), (6 , heads), (1 , tails), (2 , tails), (3 , tails), (4 , tails), (5 , tails), (6 , tails)

• (4 , heads), (4 , tails), (5 , heads), (5 , tails), (6 , heads), (6, tails)

• (4 , 5 , 6) , (heads , tails)

Given the number cube and spinner shown, how many possible outcomes are there if you roll the number cube once and spin the spinner once?

• 24
• 10
• 6
• 4

A box of lollipops contains 4 strawberry lollipops, 3 sour apple lollipops, 2 grape lollipops, and 1 blue raspberry lollipop. Your friend randomly selects a lollipop and does not replace it. Then you randomly select a lollipop. What is the probability that your friend will get a strawberry lollipop and you will get a sour apple lollipop?

• 3/25

• 2/7

• 1/5

• 2/15

A bag contians 4 red tokens, 6 blue tokens, and 2 white tokens. One token is drawn from the bag and then replaced. Another token is then drawn from the bag. What is the probability that the first token was blue and the second token was white?

• 1/12
• 2/3
• 1/8
• 1/4