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# Book_Ex_10_5_f10 - Aggressive Act TV Watching Yes No Less...

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Statistics 3011, Course Notes Supplement 7 December 3, 2010 Chapter 10, Example 5 in Textbook Example 5 in Section 10.1 of the textbook presents the following data on teenagers’ TV watching habits and whether or not they committed an aggressive act later in life. The data are based on 707 randomly sampled families in upstate New York. Aggressive Act TV Watching Yes No Total Less than 1 hour per day 5 83 At least 1 hour per day 154 465 Total a) Compute the row totals, column totals, and the grand total. b) Compute the expected cell counts in this table under the hypothesis that TV watch- ing and committing an aggressive act are independent.

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Unformatted text preview: Aggressive Act TV Watching Yes No Less than 1 hour per day At least 1 hour per day c) Test for an association between teenagers’ TV watching and the propensity to com-mit an aggressive act later in life. Use Table C to get a range for the p-value, and conduct the test at the α = . 05 level. 1 Statistics 3011, Course Notes Supplement 7 December 3, 2010 d) Use the pchisq function in R to get an exact p-value for the test in part c). e) What does Section 10.1 of the textbook have to say about this problem (p. 477)? f) Is this a coincidence? Explain. 2...
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