The article "Display of Health Risk Behaviors on MySpace by Adolescents"+ described a study in which researchers looked at a random sample of 500 publicly accessible MySpace web profiles posted by 18-year-olds. The content of each profile was analyzed. One of the conclusions reported was that displaying sport or hobby involvement was associated with decreased references to risky behavior (sexual references or references to substance abuse or violence). (a) Is the study described an observational study or an experiment? O an observational study O an experiment (b) Is it reasonable to generalize the stated conclusion to all 18-year-olds with a publicly accessible MySpace web profile? What aspect of the study supports your answer? O No, it is not reasonable to generalize the stated conclusion since the study didn't include all 18-year-olds on MySpace. O No, it is not reasonable to generalize the stated conclusion since the study was an experiment and you cannot generalize conclusions to populations. O Yes, since this was an experiment of 18-year-olds with MySpace profiles it is reasonable to generalize the stated conclusion. O Yes, since this was a random sample of 18-year-olds with publicly accessible MySpace web profiles it is reasonable to generalize the stated conclusion. (c) Not all MySpace users have a publicly accessible profile. Is it reasonable to generalize the stated conclusion to all 18-year-old MySpace users? Explain. O No, it is not reasonable to generalize the stated conclusion to all 18-year-olds on MySpace since the users volunteered for the study. O No, it is not reasonable to generalize the stated conclusion to all 18-year-old MySpace users since no users without publicly accessible profiles were included in the study. O Yes, it is reasonable to generalize the stated conclusion since the study was an experiment not an observational study of 18-year-old users. O Yes, it is reasonable to generalize the stated conclusion since the study consisted of randomly chosen individuals from the group of 18-year-old users. (d) Is it reasonable to generalize the stated conclusion to all MySpace users with a publicly accessible profile? Explain. O Yes, it is reasonable to generalize the stated conclusion to all MySpace users with publicly accessible profiles since this was an experiment based on 18-year-old users on MySpace. O No, it is not reasonable to generalize the stated conclusion to all MySpace users with publicly accessible profiles since this was an observational study of 18-year- olds. O No, it is not reasonable to generalize the stated conclusion to all MySpace users with publicly accessible profiles since only 18-year-olds were included in the study. O Yes, it is reasonable to generalize the stated conclusion to all MySpace users with publicly accessible profiles since this was a random sample of 18-year-old users.

The article "Display of Health Risk Behaviors on MySpace by Adolescents"+ described a study in which researchers looked at a random sample of 500 publicly accessible MySpace web profiles posted by 18-year-olds. The content of each profile was analyzed. One of the conclusions reported was that displaying sport or hobby involvement was associated with decreased references to risky behavior (sexual references or references to substance abuse or violence). (a) Is the study described an observational study or an experiment? O an observational study O an experiment (b) Is it reasonable to generalize the stated conclusion to all 18-year-olds with a publicly accessible MySpace web profile? What aspect of the study supports your answer? O No, it is not reasonable to generalize the stated conclusion since the study didn't include all 18-year-olds on MySpace. O No, it is not reasonable to generalize the stated conclusion since the study was an experiment and you cannot generalize conclusions to populations. O Yes, since this was an experiment of 18-year-olds with MySpace profiles it is reasonable to generalize the stated conclusion. O Yes, since this was a random sample of 18-year-olds with publicly accessible MySpace web profiles it is reasonable to generalize the stated conclusion. (c) Not all MySpace users have a publicly accessible profile. Is it reasonable to generalize the stated conclusion to all 18-year-old MySpace users? Explain. O No, it is not reasonable to generalize the stated conclusion to all 18-year-olds on MySpace since the users volunteered for the study. O No, it is not reasonable to generalize the stated conclusion to all 18-year-old MySpace users since no users without publicly accessible profiles were included in the study. O Yes, it is reasonable to generalize the stated conclusion since the study was an experiment not an observational study of 18-year-old users. O Yes, it is reasonable to generalize the stated conclusion since the study consisted of randomly chosen individuals from the group of 18-year-old users. (d) Is it reasonable to generalize the stated conclusion to all MySpace users with a publicly accessible profile? Explain. O Yes, it is reasonable to generalize the stated conclusion to all MySpace users with publicly accessible profiles since this was an experiment based on 18-year-old users on MySpace. O No, it is not reasonable to generalize the stated conclusion to all MySpace users with publicly accessible profiles since this was an observational study of 18-year- olds. O No, it is not reasonable to generalize the stated conclusion to all MySpace users with publicly accessible profiles since only 18-year-olds were included in the study. O Yes, it is reasonable to generalize the stated conclusion to all MySpace users with publicly accessible profiles since this was a random sample of 18-year-old users.

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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Transcribed Image Text:The article "Display of Health Risk Behaviors on MySpace by Adolescents"+ described a study in which researchers looked at a random sample of 500 publicly accessible MySpace web profiles posted by 18-year-olds. The content of each profile was analyzed. One of the conclusions reported was that displaying sport or hobby involvement was associated with decreased references to risky behavior (sexual references or references to substance abuse or violence). (a) Is the study described an observational study or an experiment? an observational study an experiment (b) Is it reasonable to generalize the stated conclusion to all 18-year-olds with a publicly accessible MySpace web profile? What aspect of the study supports your answer? No, it is not reasonable to generalize the stated conclusion since the study didn't include all 18-year-olds on MySpace. No, it is not reasonable to generalize the stated conclusion since the study was an experiment and you cannot generalize conclusions to populations. O Yes, since this was an experiment of 18-year-olds with MySpace profiles it is reasonable to generalize the stated conclusion. O Yes, since this was a random sample of 18-year-olds with publicly accessible MySpace web profiles it is reasonable to generalize the stated conclusion. (c) Not all MySpace users have a publicly accessible profile. Is it reasonable to generalize the stated conclusion to all 18-year-old MySpace users? Explain. No, it is not reasonable to generalize the stated conclusion to all 18-year-olds on MySpace since the users volunteered for the study. No, it is not reasonable to generalize the stated conclusion to all 18-year-old MySpace users since no users without publicly accessible profiles were included in the study. Yes, it is reasonable to generalize the stated conclusion since the study was an experiment not an observational study of 18-year-old users. Yes, it is reasonable to generalize the stated conclusion since the study consisted of randomly chosen individuals from the group of 18-year-old users. (d) Is it reasonable to generalize the stated conclusion to all MySpace users with a publicly accessible profile? Explain. Yes, it is reasonable to generalize the stated conclusion to all MySpace users with publicly accessible profiles since this was an experiment based on 18-year-old users on MySpace. O No, it is not reasonable to generalize the stated conclusion to all MySpace users with publicly accessible profiles since this was an observational study of 18-year- olds. No, it is not reasonable to generalize the stated conclusion to all MySpace users with publicly accessible profiles since only 18-year-olds were included in the study. Yes, it is reasonable to generalize the stated conclusion to all MySpace users with publicly accessible profiles since this was a random sample of 18-year-old users.

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