Question

Social networking is becoming more and more popular around the world. Pew Research Center used a survey of adults in several countries to determine the percentage of adults who use social networking sites (USA Today, February 8, 2012). Assume that the results for surveys in Great Britain, Israel, Russia and United States are as follows. Country Use Social Networking Sites Great Britain Israel Russia United States Yes 344 265 301 500 No 456 235 399 500 a. Conduct a hypothesis test to determine whether the proportion of adults using social networking sites equal for all four countries. Using a .05 level of significance. Use Table 12.4. 1. 2. 3. Choose correct answer from above choice - Select your answer -123Item 1 H a: - Select your answer -All population proportions are equalNot all population proportions are equalItem 2 The p-value is - Select your answer -less than .01greater than .01Item 3 What is your conclusion? - Select your answer -Conclude the population proportions are not all equal.Conclude the population proportions all are equal.Item 4 b. What are the sample proportions for each of the four countries? Round your answers to two decimal places. Great Britain Israel Russia United States Which country has the largest proportion of adults using social networking sites? - Select your answer -Great BritainIsraelRussiaUnited StatesItem 9 c. Using a .05 level of significance, conduct multiple pairwise comparison tests among the four countries. Round p i, p j and Diff to two decimal places. Round CV ij to four decimal places. Comparison p i p j Diff n 1 n 2 CV ij Diff > CV ij GB vs I - Select your answer -YesNoItem 16 GB vs R - Select your answer -YesNoItem 23 GB vs USA - Select your answer -YesNoItem 30 I vs R - Select your answer -YesNoItem 37 I vs USA - Select your answer -YesNoItem 44 R vs USA - Select your answer -YesNoItem 51 What is your conclusion? - Select your answer -Only two comparisons are not significant GB vs R and I vs USA. All other comparisons show a significant difference.Only two comparisons are not significant GB vs USA and I vs R. All other comparisons show a significant difference.Only two comparisons are not significant I vs USA and R vs USA. All other comparisons show a significant difference.Only two comparisons are not significant GB vs I and GB vs R. All other comparisons show a significant difference.Item 52 any help on this would be appriciated, kinda lost on how to do this

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