(b) Has the proportion of adults who totally abstain from alcohol changed? Use the a = 0.10 level of significance. First verify the model requirements. Select all that apply. A. The samples are dependent. B. The sample size is less than 5% of the population size for each sample. C. The sample size is more than 5% of the population size for each sample. D. The data come from a population that is normally distributed. E. (n1)(p1)(1-p1) >/= 10 and (n2)(p2)(1-p2) >/= 10 F. The samples are independent.
In 1940, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you on occasion consumer, alcoholic beverages?" Of the 1100 adults surveyed, 352 indicated that they were total abstainer. In a recent survey, the same questions was asked of 1100 adults and 297 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 1940 survey and the recent survey who were total abstainers are .32 and .27, respectively.
(b) Has the proportion of adults who totally abstain from alcohol changed? Use the a = 0.10 level of significance.
First verify the model requirements. Select all that apply.
A. The samples are dependent.
B. The
C. The sample size is more than 5% of the population size for each sample.
D. The data come from a population that is
E. (n1)(p1)(1-p1) >/= 10 and (n2)(p2)(1-p2) >/= 10
F. The samples are independent.
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