HW4_su2010 - Sociology 210 Summer 2010 Assignment 4 (due...

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Sociology 210 Summer 2010 Assignment 4 (due Wednesday, July 28 at beginning of lecture) Please be sure to carry out and show all relevant steps to conduct hypothesis tests for each problem that requires a hypothesis test. 1. A study conducted in 1968 indicated that American adults watched an average of 16 hours of television per week. As part of a focus group designed to discuss school violence in Los Angeles in October 2007, 25 adults were also asked about their television viewing habits and the researchers found that the sample mean was 14.8 with a sample standard deviation of 6.3. Using this data, conduct a hypothesis test at α = .05 and evaluate if this sample provides strong evidence that television viewing habits have changed among American adults? 2. A national police organization is lobbying congress for funding to hire more police officers in cities nationwide. One of its arguments is that officers, on average, work significantly longer than full-time duty, assuming full-time is μ =
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HW4_su2010 - Sociology 210 Summer 2010 Assignment 4 (due...

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