Question

In June 2002, the Gallup organization surveyed 1100 adult Americans and asked, "Do you think the Bush administration [Rotated: has gone too far, has been about right, has not gone far enough] in restricting people's civil liberties in order to fight terrorism?" Of the 1100 adult Americans surveyed in June 2002, 121 felt the Bush administration had gone too far. In May, 2006, 451 felt the Bush administration had gone too far. Does the evidence suggest that the proportion of adult Americans who think Bush administration had gone too far has increased at the alpha = 0.01 level of significance?

Answer 1

Gives 1,= 1100 n = 1100 x,=121 ,2 = 451 x = 0.01 B - - b = 27 - 121 - 0.11 451 – 0.41 1100 1100 x+xz nitna 0.26 121 +45) 1100+100 Q - 1 - - - 0.26 = 0.74 The null and alternative hypotheses Ho P,= P2 us H P > P2 The test statistic is a pocht / 0.1 - 0-4) 0-264074 (otos) = -16:04 At x=0.08, the cortical value is 2,33. since to heal or Here Zad (2.33 Fail to sailed to o 2 There is no sufficient evidence to conclude that des propostion has increased.