In 1949, an organizātion surveyed 1100 adults and asked, 'Are you a total abstainer from, or do you on occasion consume, alcohollc beverages? 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. O B. The sample size is less than 5% of the population size for each sample. O C. The samples are dependent. O D. Thhe samples are independent. DE n, (1-P1)1 2 10 and ng P2 (1- P2) 10 OF. The sample size is more than 5% of the population size for each sample.
In 1949, an organizātion surveyed 1100 adults and asked, 'Are you a total abstainer from, or do you on occasion consume, alcohollc beverages? 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. O B. The sample size is less than 5% of the population size for each sample. O C. The samples are dependent. O D. Thhe samples are independent. DE n, (1-P1)1 2 10 and ng P2 (1- P2) 10 OF. The sample size is more than 5% of the population size for each sample.
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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Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
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