Unit 6: Probability Test Review

The table shows the numbers of bags of different flavors of potato chips on a

store shelf. A customer will randomly select one bag of potato chips from the

shelf.

Which statement about the flavor of the potato chips chosen is best supported

by the information in the table?

• The flavor is least likely to be plain.

• The flavor is twice as likely to be jalapeño as ranch.

• The flavor is equally likely to be plain, jalapeño, ranch, or cheese.

• The flavor is more than twice as likely to be cheese as it is to be ranch.

The 200 students in a school band will attend an awards dinner. A random

survey of 25 of these students was conducted to determine how many of each

meal should be prepared for the dinner. The results of the survey are shown.

12 students want a beef meal.

8 students want a chicken meal.

5 students want a pasta meal.

Based on the survey results, which of these is the best prediction of the meals

wanted by the 200 students?

• There are 16 students who want a beef meal.

• There are 52 students who want either a chicken meal or a pasta meal.

• There are 32 more students who want a beef meal than want a chicken meal.

• There are 24 more students who want a pasta meal than want a chicken

  meal.

A bag contains colored tiles.

7 tiles are red

10 tiles are green

3 tiles are blue

A tile will be randomly selected from the bag. What is the probability in decimal

form that the tile selected will be green?

Mathematical Equivalence

ON

Dani has 5 pink bows, 1 blue bow, and 4 purple bows. She will randomly choose 1 bow from the box. The probability Dani will choose a pink bow is

(a)  

• 1/2
• 2/5
• 1/10
• 3/5

A survey of visitors at a national park was conducted to determine the preferred

activity of each visitor to the park. Each visitor chose one activity. The survey

results are shown in the table.

Based on this information, which prediction about the preferred activity for the

next 200 visitors to the park is the most reasonable?

• The number of visitors who prefer water sports will be 5 more than the

  number of visitors who prefer biking trails.

• The number of visitors who prefer hiking trails will be 8 more than the

  number of visitors who prefer water sports.

• The number of visitors who prefer camping will be 15 times the number of

  visitors who prefer hiking trails.

• The number of visitors who prefer camping will be 2 times the number of

  visitors who prefer water sports.

Mari bought 6 packets of tomato seeds. Each packet contained 24 seeds. She

planted 1 packet of the 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.

A survey showed that 8 out of 20 homeowners in a neighborhood had cable

television. If there were 320 homeowners in the neighborhood, how many could

be expected to have cable television?

Record your answer either by typing it in the box using the keypad.

Mathematical Equivalence

ON

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

Joy has an evenly divided spinner with one of the letters A through E in each

section. She also has a number cube with one of the numbers 1 through 6 on

each side.

What is the probability of rolling a 5 and spinning a B?

Madeline rolls a fair six-sided number cube and then flips a fair coin.

Which statements are true about this experiment? Choose all that are correct.

• The event "The number rolled is equal to 3" is made up of the outcomes (3,

  heads) and (3, tails).

• There are a total of 6 possible outcomes to this experiment.