AnswersHCISD-Mathematical Models with Applications B-CR SUMMERComparing Measures of Center and Variability

Population Proportion Answers

14 verified answers
1
Free Preview

Question text not available

Answer:

23

2
Free Preview

Question text not available

Answer:

1.0

3

Complete the statements to find the margin of error.

Answers:
The sample size in this problem is students.:500
The population proportion is estimated as .:0.87
formula E = z* , to the nearest tenth of a percent, the result is %.:2.9
4

0.130.330.38✔ 0.87

A
0.13
B
0.33
C
0.38
D
✔ 0.87
5

1.82.6✔ 2.94.1

A
1.8
B
2.6
C
✔ 2.9
D
4.1
12

Complete the statements.

Answers:
The estimated population proportion, , is %.:33
When the margin of error is calculated using the formula E = z* , to the nearest tenth of a percent, the result is %.:2.2
With 95% confidence, it can be said that the proportion of subscribers who would like more coverage of national news is between % and%.:30.8
With 95% confidence, it can be said that the proportion of subscribers who would like more coverage of national news is between % and%.:35.2
13

✔ 2.22.7 3.84.3

A
✔ 2.2
B
2.7
C
3.8
D
4.3
14

28.729.230.3✔ 30.8

A
28.7
B
29.2
C
30.3
D
✔ 30.8
15

✔ 35.235.736.837.3

A
✔ 35.2
B
35.7
C
36.8
D
37.3
28

Complete the statement to form the conclusion.It can be said with

A
90% confidence that between 42.5% and 47.9% of Americans own a dog.
B
90% confidence that between 45.2% and 54.8% of Americans own a dog.
C
95% confidence that between 42.5% and 47.9% of Americans own a dog.
D
95% confidence that between 45.2% and 54.8% of Americans own a dog.
29

If Terrence and Deena use the same confidence level, which statement best describes the results of their margin of error calculations?

A
Terrence’s margin of error will be exactly three times as large as Deena’s.
B
Deena’s margin of error is half the amount of Terrence’s.
C
If Terrence samples 800 more people, his margin of error will be the same as Deena’s.
D
If Deena samples 400 fewer people, her margin of error would be exactly half the amount of Terrence’s.
30

Question text not available

Answer:

1,752

31

How many households would Marcus have to survey in order to meet his requirements? n = [image 1] (1 – [image 2] ) • [image 3]

Question illustration
A
99 households
B
267 households
C
463 households
D
925 households
32

Complete the statements.

Answers:
The estimated population proportion, , is %.:33
When the margin of error is calculated using the formula E = z* , to the nearest tenth of a percent, the result is %.:2.2
With 95% confidence, it can be said that the proportion of subscribers who would like more coverage of national news is between % and%.:30.8
With 95% confidence, it can be said that the proportion of subscribers who would like more coverage of national news is between % and%.:35.2

Did you find these answers helpful?

More from this Course

Assignment
17 verified answers

Comparing Measures of Center and Variability

Assignment
14 verified answers

Comparing Measures of Center and Variability

Instruction
10 verified answers

Instruction