Question: Problem # 7: Exercise 8.64, page 419. (c) Which assumptions have you made to validate your 98% CI in part (a)? 8.64 In a CNN/USA

Problem # 7: Exercise 8.64, page 419. (c) Which assumptions have you made to validate your 98% CI in part (a)?

8.64 In a CNN/USA Today/Gallup Poll, 1000 Americans were asked how well the term patriotic de- scribed themselves.10 Some results from the poll are contained in the following summary table. Age Group 1834 60+ All .53 .31 Very well Somewhat well Not Very well Not well at all .35 .41 .16 .08 .77 .17 .04 .02 .10 .06 a If the 1834 and 60+ age groups consisted of 340 and 150 individuals, respectively, find a 98% confidence interval for the difference in proportions of those in these age groups who agreed that patriotic described them very well. b Based on the interval that you obtained in part (a), do you think that the difference in proportions of those who view themselves as patriotic is as large as 0.6? Explain

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