You may need to use the appropriate technology to answer this question. Social networking is becoming more and more popular around the world. A survey was conducted of adults in several countries to determine the percentage of adults who use social networking sites. Assume that the results for surveys in Great Britain, Israel, Russia, and the United States are as follows. Use Social Networking Sites Yes State the null and alternative hypotheses. OH: Not all population proportions are equal. H₂: PGB PPR-Pus No O Ho: PGBP = PR - PUS H.: Not all population proportions are equal. Pus O Ho: All population proportions are not equal. Ha: Pan PPR-Pus OHg: PGB-PL-PR PUS H: All population proportions are not equal. Great Britain (GB) 360 440 (a) Conduct a hypothesis test to determine whether the proportion of adults using social networking sites is equal for all four countries. Russia O United States GB vs. I Comparison P₁-P GB vs. R United Israel (1) Russia (R) States (US) GB vs. US What is the p-value? (Round your answer to four decimal places.) p-value= I vs. R Find the value of the test statistic. (Round your answer to three decimal places.) I vs. US R vs. US 275 Using a 0.05 level of significance, what is your conclusion? O Do not reject Hg. We cannot conclude that not all population proportions are equal. O Reject Ho. We cannot conclude that not all population proportions are equal. O Reject Ho. We conclude that not all population proportions are equal. O Do not reject Hg. We conclude that not all population proportions are equal. Country 225 (b) What are the sample proportions of people who use social networking sites for each of the four countries? PGB- P₁ = PR = 315 Which country has the largest proportion of adults using social networking sites? O Great Britain O Israel 385 (c) Using a 0.05 level of significance, conduct multiple pairwise comparison tests among the four countries. (Round your answers for the critical values to four decimal places.) CV 520 480 Which comparisons show a significant difference? (Select all that apply.) Great Britain vs. Israel Great Britain vs. Russia Great Britain vs. United States Israel vs. Russia Israel vs. United States O Russia vs. United States