Social media is popular around the world. Statista provides estimate of the number of social media users in various countries in 2017 as well as the projections for 2022. Assume that the results for surveys in the United Kingdom, China, Russia, and the United States are Excel File: data12-23.xlsx Country Use Social United United Media Kingdom China Russia States Yes 480 215 343 640 No 320 285 357 360 a. Conduct a hypothesis test to determine whether the proportion of adults using social media is equal for all four countries. Using a 0.05 level of significance. 1. Họ : P1 + Pa =pa - Pa 2. Ha : P1 = P2 = Ps = P4 3. Họ : P1 + P2 =Pa + pa Choose correct answer from above choice 2 Ha: Not all population proportions are equal V What is the p-value? Use Table 3 of Appendix B. The p-value is less than 0.01 What is your conclusion? Conclude the all population proportions are not equal b. What are the sample proportions for each of the four countries? Round your answers to two decimal places. United Kingdom .27 China Russia United States Which country has the largest proportion of adults using social networking sites? - Select your answer- V c. Using a 0.05 level of significance, conduct multiple pairwise comparison tests among the four countries. Round D Pj and Absolute diff to two decimal places. Round CVj to four decimal places. Comparison Absolute diff CVij Significant if absolute diff > CVj UK vs C - -v Select your answer UK vs R - V Select your answer - UK vs US - Select your answer - v C vs R - Select your answer-v C vs US - Select your answer - V R vs US - Select your answer-
Social media is popular around the world. Statista provides estimate of the number of social media users in various countries in 2017 as well as the projections for 2022. Assume that the results for surveys in the United Kingdom, China, Russia, and the United States are Excel File: data12-23.xlsx Country Use Social United United Media Kingdom China Russia States Yes 480 215 343 640 No 320 285 357 360 a. Conduct a hypothesis test to determine whether the proportion of adults using social media is equal for all four countries. Using a 0.05 level of significance. 1. Họ : P1 + Pa =pa - Pa 2. Ha : P1 = P2 = Ps = P4 3. Họ : P1 + P2 =Pa + pa Choose correct answer from above choice 2 Ha: Not all population proportions are equal V What is the p-value? Use Table 3 of Appendix B. The p-value is less than 0.01 What is your conclusion? Conclude the all population proportions are not equal b. What are the sample proportions for each of the four countries? Round your answers to two decimal places. United Kingdom .27 China Russia United States Which country has the largest proportion of adults using social networking sites? - Select your answer- V c. Using a 0.05 level of significance, conduct multiple pairwise comparison tests among the four countries. Round D Pj and Absolute diff to two decimal places. Round CVj to four decimal places. Comparison Absolute diff CVij Significant if absolute diff > CVj UK vs C - -v Select your answer UK vs R - V Select your answer - UK vs US - Select your answer - v C vs R - Select your answer-v C vs US - Select your answer - V R vs US - Select your answer-
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Social media is popular around the world. Statista provides estimate of the number of social media users in various countries in 2017 as well as the projections for 2022. Assume that the results for surveys in the United Kingdom, China, Russia, and the United States are as follows.
![**Social Media Use Study**
Social media is popular around the world. Statista provides estimates of the number of social media users in various countries in 2017, as well as the projections for 2022. Assume these results for surveys in the United Kingdom, China, Russia, and the United States.
**Excel File:** data12-23.xlsx
---
### User Data by Country - 2017
| Use Social Media | United Kingdom | China | Russia | United States |
|------------------|----------------|-------|--------|---------------|
| Yes | 480 | 215 | 343 | 640 |
| No | 320 | 285 | 357 | 360 |
---
### a. Hypothesis Testing
Conduct a hypothesis test to determine whether the proportion of adults using social media is equal for all four countries, using a 0.05 level of significance.
- **H0**: \( p1 = p2 = p3 = p4 \)
- **Ha**: Not all population proportions are equal
Choose the correct answer:
- **Correct:** 2
- **Ha**: Not all population proportions are equal
What is the p-value? Use Table 3 of Appendix B.
- **P-value is:** less than 0.01
What is your conclusion?
- **Conclude all population proportions are:** not equal
### b. Sample Proportions for Each Country
Round your answers to two decimal places.
- **United Kingdom:** 0.27
- **China:** [Input required]
- **Russia:** [Input required]
- **United States:** [Input required]
Which country has the largest proportion of adults using social networking sites?
- **Select your answer:** [Input required]
### c. Multiple Pairwise Comparison Tests
Using a 0.05 level of significance, conduct multiple pairwise comparison tests among the four countries. Round \( \hat{p}_i \), \( \hat{p}_j \), and Absolute diff to two decimal places. Round \( CV_{ij} \) to four decimal places.
| Comparison | \( \hat{p}_i \) | \( \hat{p}_j \) | Absolute diff | \( n_i \) | \( n_j \) | \( CV_{ij} \) | Significant if Absolute diff > \( CV_{ij} \) |
|------------|-----------------|](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6b64a519-1474-49ec-8afb-98e9a37e1aea%2F63f4d38d-12b2-40a8-9d46-29f2dcca2e01%2Fkdwqe2_processed.png&w=3840&q=75)
Transcribed Image Text:**Social Media Use Study**
Social media is popular around the world. Statista provides estimates of the number of social media users in various countries in 2017, as well as the projections for 2022. Assume these results for surveys in the United Kingdom, China, Russia, and the United States.
**Excel File:** data12-23.xlsx
---
### User Data by Country - 2017
| Use Social Media | United Kingdom | China | Russia | United States |
|------------------|----------------|-------|--------|---------------|
| Yes | 480 | 215 | 343 | 640 |
| No | 320 | 285 | 357 | 360 |
---
### a. Hypothesis Testing
Conduct a hypothesis test to determine whether the proportion of adults using social media is equal for all four countries, using a 0.05 level of significance.
- **H0**: \( p1 = p2 = p3 = p4 \)
- **Ha**: Not all population proportions are equal
Choose the correct answer:
- **Correct:** 2
- **Ha**: Not all population proportions are equal
What is the p-value? Use Table 3 of Appendix B.
- **P-value is:** less than 0.01
What is your conclusion?
- **Conclude all population proportions are:** not equal
### b. Sample Proportions for Each Country
Round your answers to two decimal places.
- **United Kingdom:** 0.27
- **China:** [Input required]
- **Russia:** [Input required]
- **United States:** [Input required]
Which country has the largest proportion of adults using social networking sites?
- **Select your answer:** [Input required]
### c. Multiple Pairwise Comparison Tests
Using a 0.05 level of significance, conduct multiple pairwise comparison tests among the four countries. Round \( \hat{p}_i \), \( \hat{p}_j \), and Absolute diff to two decimal places. Round \( CV_{ij} \) to four decimal places.
| Comparison | \( \hat{p}_i \) | \( \hat{p}_j \) | Absolute diff | \( n_i \) | \( n_j \) | \( CV_{ij} \) | Significant if Absolute diff > \( CV_{ij} \) |
|------------|-----------------|
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
Recommended textbooks for you
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman