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Question 14, 11.1.19-T HW Score:6?.71%,13.54 of 20 points @3 Part 5 of r ' 3 Points: 1.09 of 2 In 1948' an organization surveyed 1100
Question 14, 11.1.19-T HW Score:6?.71%,13.54 of 20 points @3 Part 5 of r ' 3 Points: 1.09 of 2 In 1948' an organization surveyed 1100 adults and asked. 'Are you a total abstainer fromI or do you on occasion consume. alcoholic beverages?\" Of the 1 100 adults surveyed. 385 indicated that they were total abstainers. In a recent survey. the same question was asked of 1100 adults and 319 indicated that they were total abstainers. Complete parts (a) and (b) below. {a} Determine the sample proportion for each sample. The proportions of the adults who took the 1948 survey and the recent survey who were total abstainers are 0.35 and 0.29 . respectively. (Round to three decimal places as needed.) {b} Has the proportion of adults who totally abstain from alcohol changed? Use the u = 0.10 level of signicance. First verify the model requirements. Select all that apply. The data come from a population that is normally distributed. The sample size is more than 5% of the population size for each sample. The samples are dependent. V The sample size is less than 5% oi the population size for each wmple. u a n n n n1p1 [1 -p1] 210 and n2p2[1 p2) 210 V The samples are independent. Identify the null and alternative hypotheses for this test. Let p1 represent the population proportion of 1943 adults who were total abstainers and p2 represent the population proportion of recent adults who were total abstainers. Determine the null and alternative hypotheses. H0: p1 = p2 H1: p1 ' p2 Find the test statistic for this hypothesis test. 3.02 (Round to two decimal places as needed.) Determine the Pvalue for this hypothesis test. (Round to three decimal places as needed.)
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