AnswersConcepts in Probability and Statistics - MA3120 B-CRTwo-Way Tables

Two-Way Tables Answers

35 verified answers3 views
86629
Free Preview

Students from School A and School B were asked whether they watch TV or use the Internet after finishing their homework. The Venn diagram and the two-way table show the results from the two surveys. Which statement is true?

A
More students do both activities at A than at B.
B
More students watch TV at B than at A.
C
More students do neither activity at B than at A.
D
More students were surveyed at A than at B.
86630
Free Preview

Which statements are correct? Check all that apply.

A
5 students study both French and Spanish.
B
63 students study French.
C
2 students study neither French nor Spanish.
D
30 students study French, but not Spanish.
E
63 students study Spanish.
86631

A group of 65 baseball players were surveyed about which hand they favor for batting. The data from the survey are shown in the Venn diagram. Determine the value for each variable in the two-way table. a = b = c = d = e =

Answers:
Part 1:7
Part 2:31
Part 3:28
Part 4:13
Part 5:65
86632

A summer camp has 32 campers. A total of 22 of them swim, 20 play softball, and 5 do not swim or play softball. Which values complete the table?

A
a = 15, b = 10, c = 7, d = 5, e = 12
B
a = 15, b = 7, c = 5, d = 10, e = 12
C
a = 14, b = 7, c = 5, d = 12, e = 10
D
a = 14, b = 12, c = 7, d = 5, e = 10
86633

Which statement is true about the marginal frequencies in this table?

A
191 students play sports and 150 students do not.
B
153 students do not participate in sports and seventy-five 12th graders were surveyed
C
153 students do not participate in sports and 190 do.
D
191 students play sports and ninety-seven 10th graders were surveyed.
86634

Which statement is true about the joint frequencies in this table?

A
Twenty-three 9th graders and fifteen 11th graders prefer math.
B
Fourteen 11th graders prefer math and eight 10th graders prefer science.
C
Thirty-five 12th graders prefer math and nine 10th graders prefer science.
D
Twenty-three 9th graders and thirty-two 12th graders prefer math.
86635

6/508/50✔ 14/506/14

A
6/50
B
8/50
C
14/50
D
6/14
86636

Which statements are correct? Check all that apply.

A
More 7th graders were surveyed than 8th graders.
B
The marginal relative frequency for action movies is 44%.
C
The joint relative frequency for 8th graders who like comedy movies is 16%.
D
Most students prefer drama movies.
E
Half of the 7th graders prefer action movies.
86637

Students from School A and School B were asked whether they watch TV or use the Internet after finishing their homework. The Venn diagram and the two-way table show the results from the two surveys. Which statement is true?

A
More students do both activities at A than at B.
B
More students watch TV at B than at A.
C
More students do neither activity at B than at A.
D
More students were surveyed at A than at B.
86638

✔ 15/5015/3621/5036/50

A
15/50
B
15/36
C
21/50
D
36/50
86639

Question text not available

Answer not available
86640

6/506/21✔ 21/5021/36

A
6/50
B
6/21
C
21/50
D
21/36
86641

Question text not available

Answer not available
86642

Question text not available

Answer not available
86643

Question text not available

Answer not available

Did you find these answers helpful?

More from this Course

Assignment
29 verified answers

Relative Frequencies and Association

Assignment
37 verified answers

Two-Way Tables

Assignment
19 verified answers

Assignment