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The paper From Dr Kildare to Grey s Anatomy describes several studies of how the way in which doctors are portrayed on television might influence public perception of doctors One study was described as follows Rebecca Chory Ph D now an associate professor of communication at West Virginia University began studying the effect of such portrayals on patients attitudes toward physicians Using a survey of 300 undergraduate students she compared perceptions of physicians in 1992 the end of the era when physicians were shown as all knowing wise father figures with those in 1999 when shows such as ER and Chicago Hope 1994 2000 were continuing the transformation to showing the private side and lives of physicians including vivid demonstrations of their weaknesses and insecurities i What is the population of interest OTV doctors Dr Chory found that regardless of the respondents personal experience with physicians those who watched certain kinds of television had declining perceptions of physicians composure and regard for others Her results indicated that the more prime time physician shows that people watched in which physicians were the main characters the more uncaring cold and unfriendly the respondents thought physicians were a Answer the following four questions for the observational study described in this exercise Hint Reviewing Examples 1 4 and 1 5 might be helpful Opatients that saw doctors after 1999 all patients Ban patients that saw doctors before 1992 Oreal life doctors G stra ii Was the sample selected in a reasonable way Yes the sample is large enough to be reasonable Yes the report explains the randomization scheme O No the report indicates no randomization O No the sample size is too small Yes the sample included undergraduate students iii Is the sample likely to be representative of the population of interest O No the population of interest is all patients but only undergraduate students were surveyed Yes 300 students is a large enough sample to represent the whole population O No the population of interest is TV doctors but only undergraduate students were surveyed Yes undergraduate students were surveyed and they are representative of all patients No the population of interest is real life doctors but only undergraduate students were surveyed

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