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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
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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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 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. Ho : P1 + P2 = P3 = P4 2. Hn : P1 = p2 = P3 = P4 3. Họ : P1 + P2 = ps + P4 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 Di , Dj and Absolute diff to two decimal places. Round CVij to four decimal places. Comparison Absolute diff Significant if absolute diff > CV,i UK vs C - Select your answer - v UK vs R |- Select your answer - V UK vs US - Select your answer- v C vs R Select your answer - V C vs US - v Select your answer - V R vs US - Select your answer-V O O O O O ® O O O O O O O O O O O O
Transcribed Image Text:Social media 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. Ho : P1 + P2 = P3 = P4 2. Hn : P1 = p2 = P3 = P4 3. Họ : P1 + P2 = ps + P4 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 Di , Dj and Absolute diff to two decimal places. Round CVij to four decimal places. Comparison Absolute diff Significant if absolute diff > CV,i UK vs C - Select your answer - v UK vs R |- Select your answer - V UK vs US - Select your answer- v C vs R Select your answer - V C vs US - v Select your answer - V R vs US - Select your answer-V O O O O O ® O O O O O O O O O O O O
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