Question

g How Many Social Ties Do You Have? Most US adults have social ties with a large number of people, including friends, family, co-workers, and other acquaintances. It is nearly impossible for most people to reliably list all the people they know, but using a mathematical model, social analysts estimate that, on average, a US adult has social ties with people.1 A survey of randomly selected US adults who are cell phone users finds that the average number of social ties for the cell phone users in the sample was with a standard deviation of . Does the sample provide evidence that the average number of social ties for a cell phone user is significantly different from , the hypothesized number for all US adults? 1Hampton, K., Goulet, L., Rainie, L., and Purcell, K., ‘‘Social Networking Sites and Our Lives," Pew Research Center, pewresearch.org, June 16, 2011. State the null and alternative hypotheses. eTextbook and Media Give the test statistic and the -value and state the conclusion of the test. Round your answer for the test statistic to two decimal places and your answer for the -value to three decimal places.

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