What is the marginal relative frequency of 12th graders?

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The table below shows the results of a poll in which randomly selected high school students were asked if they prefer Football or Basketball. What is the marginal relative frequency of 12th graders?

9th Grade 
10th Grade 
11th Grade 
12th Grade 
Football128127
Basketball51079

a. 0.4375

b. 0.5625

c. 0.2286

d. 0.1

The table below shows the results of a poll in which randomly selected high school students were asked if they prefer Football or Basketball. What is the joint relative frequency of 10th graders who like football?

9th Grade
10th Grade
11th Grade
12th Grade
Football128127
Basketball51079

a. 0.1143

b. 0.1429

c. 0.4444

d. 0.3077 

The table below shows the results of a poll in which randomly selected high school students were asked if they prefer virtual or traditional schools. What is the marginal relative frequency of students who prefer traditional school?

9th Grade
10th Grade
11th Grade
12th Grade
Virtual9141720
Traditional171652

a. 0.06

b. 0.6

c. 0.04

d. 0.4

The table below shows the results of a poll in which randomly selected high school students were asked if they prefer virtual or traditional schools. If you are given a student who prefers virtual school, what is the probability that the student is also a 12th grader?

 9th Grade 
 10th Grade 
 11th Grade 
 12th Grade 
Virtual9141720
Traditional171652

a. about 0.33

b. about 0.91

c. about 0.25

d. about 0.20

Students and teachers at a school were polled to see if they were in favor of extending the parking lot into part of the athletic fields. The results of the poll are shown in the two-way table below. What is the probability that someone who is a student is also in favor of extending the parking lot into part of the athletic fields?

  In Favor
  Not in Favor
Students1623
Teachers914

a. about 0.64

b. about 0.26

c. about 0.41

d. about 0.16

The table below shows the results of a poll in which randomly selected high school students were asked if they prefer virtual or traditional schools. What is the joint relative frequency of 9th graders who prefer virtual schools?

9th Grade
10th Grade
11th Grade
12th Grade
Virtual9141720
Traditional171652

a. 0.09

b. 0.17

c. 0.3462

d. 0.15

The tally below shows the results of a poll in which adults and children were asked their favorite type of dessert. Which of the following two way tables shows the correct relative frequencies for the tally shown below?

What is the marginal relative frequency of 12th

a. What is the marginal relative frequency of 12th

b. What is the marginal relative frequency of 12th

c. What is the marginal relative frequency of 12th

d. What is the marginal relative frequency of 12th

Chuck is the owner of a car dealership. He is assessing the success rates of his top three salespeople in order to offer one of them a promotion. Over two months, for each attempted sale, he records whether the salesperson made a successful sale or not. The results are shown in the table below. Which salesperson has the highest success rate?

  Successful
  Unsuccessful
Rachel64
Jeff55
Bill87
Jennifer36

a. Rachel

b. Jeff

c. Bill

d. Jennifer

Four competing basketball teams in ABC county are competing to go to the state basketball championship. The team with the highest win rate will go to the championship. Which team would be selected to go?

  Win
  Loss
Barracudas133
Sharks103
Sixers121
Hawks82

a. Barracudas

b. Sharks

c. Sixers

d. Hawks

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