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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 634 people.¹ A survey of 1700 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 664 with a standard deviation of 778. Does the sample provide evidence that the average number of social ties for a cell phone user is significantly different from 634, 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. Ho: 664 vs HA: H = 664 Ho: H=634 vs HA: > 634 O Ho: H= 664 vs H₁: #664 O Ho: H=634 vs HA: < 634 Ho: H=634 vs HA: #634 eTextbook and Media

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 634 people.¹ A survey of 1700 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 664 with a standard deviation of 778. Does the sample provide evidence that the average number of social ties for a cell phone user is significantly different from 634, 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. Ho: 664 vs HA: H = 664 Ho: H=634 vs HA: > 634 O Ho: H= 664 vs H₁: #664 O Ho: H=634 vs HA: < 634 Ho: H=634 vs HA: #634 eTextbook and Media

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter12: Probability
Section12.3: Conditional Probability; Independent Events; Bayes' Theorem
Problem 82E
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Round your answer for the test statistic to two decimal places and your answer for the p-value to three decimal places. test statistic = i p-value = i Conclusion: Reject eTextbook and Media Yes O No ✓ Ho- Does the sample provide evidence that the average number of social ties for a cell phone user is significantly different from 634, the hypothesized number for all US adults? e Textbook and Media O E 7 P the test 8 C ( 9 F10
Transcribed Image Text:Round your answer for the test statistic to two decimal places and your answer for the p-value to three decimal places. test statistic = i p-value = i Conclusion: Reject eTextbook and Media Yes O No ✓ Ho- Does the sample provide evidence that the average number of social ties for a cell phone user is significantly different from 634, the hypothesized number for all US adults? e Textbook and Media O E 7 P the test 8 C ( 9 F10
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 634 people.¹ A survey of 1700 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 664 with a standard deviation of 778. Does the sample provide evidence that the average number of social ties for a cell phone user is significantly different from 634, 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. Ho: H 664 vs HA: H = 664 Ho: H=634 vs HA: > 634 O Ho: H= 664 vs H₁: μ # 664 O Ho: H=634 vs HA: H<634 O Ho: H=634 vs HA: #634 e Textbook and Media 5: 8 8
Transcribed Image Text: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 634 people.¹ A survey of 1700 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 664 with a standard deviation of 778. Does the sample provide evidence that the average number of social ties for a cell phone user is significantly different from 634, 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. Ho: H 664 vs HA: H = 664 Ho: H=634 vs HA: > 634 O Ho: H= 664 vs H₁: μ # 664 O Ho: H=634 vs HA: H<634 O Ho: H=634 vs HA: #634 e Textbook and Media 5: 8 8
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