In 1949, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you on occasion consume, alcoholic beverages?" Of the 1100 adults surveyed, 374 indicated that they were total abstainers. In a recent survey, the same question was asked of 1100 adults and 330 indicated that they were total abstainers. Completé parts (a) and (b) below. (a) Determine the sample proportion for each sample. The proportions of the adults who took the 1949 survey and the recent survey who were total abstainers are 0.34 and 0.30, respectively. (Round to three decimal places as needed.) (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. DA. The data come from a population that is normally distributed. B. The sample size is less than 5% of the population size for each sample. OC. The samples are dependent. LD. The samples are independent. LE n (1-)210 and na2 (1-P2) 10 EF The sample size is more than 5% of the population size for each sample. Identify the null and alternative hypotheses for this test. Let p represent the population proportion of 1949 adults who were total abstainers and p2 represent the population proportion of recent adults who were total abstainers. Determine the null and alternative hypotheses. Ho P1 = P2 H1:P1 = P2 Find the test statistic for this hypothesis test. (Round to two decimal places as needed.)
In 1949, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you on occasion consume, alcoholic beverages?" Of the 1100 adults surveyed, 374 indicated that they were total abstainers. In a recent survey, the same question was asked of 1100 adults and 330 indicated that they were total abstainers. Completé parts (a) and (b) below. (a) Determine the sample proportion for each sample. The proportions of the adults who took the 1949 survey and the recent survey who were total abstainers are 0.34 and 0.30, respectively. (Round to three decimal places as needed.) (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. DA. The data come from a population that is normally distributed. B. The sample size is less than 5% of the population size for each sample. OC. The samples are dependent. LD. The samples are independent. LE n (1-)210 and na2 (1-P2) 10 EF The sample size is more than 5% of the population size for each sample. Identify the null and alternative hypotheses for this test. Let p represent the population proportion of 1949 adults who were total abstainers and p2 represent the population proportion of recent adults who were total abstainers. Determine the null and alternative hypotheses. Ho P1 = P2 H1:P1 = P2 Find the test statistic for this hypothesis test. (Round to two decimal places as needed.)
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 5E
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Transcribed Image Text:In 1949, an organization surveyed 1100 adults and asked, 'Are you a total abstainer from, or do you on occasion consume, alcoholic beverages?" Of the 1100 adults
surveyed, 374 indicated that they were total abstainers. In a recent survey, the same question was asked of 1100 adults and 330 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 1949 survey and the recent survey who were total abstainers are 0.34 and 0.30, respectively.
(Round to three decimal places as needed.)
(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.
O A. The data come from a population that is normally distributed.
B. The sample size is less than 5% of the population size for each sample.
C. The samples are dependent.
YD. The samples are independent.
YE nP (1-) =10 and ny2 (1-2) = 10
In2P2
LE The sample size is more than 5% of the population size for each sample.
Identify the null and alternative hypotheses for this test. Let p, represent the population proportion of 1949 adults who were total abstainers and p2 represent the
population proportion of recent adults who were total abstainers.
Determine the null and alternative hypotheses.
Ho P1 = P2
H1 P1
= P2
Find the test statistic for this hypothesis test.
(Round to two decimal places as needed.)
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