has the proportion of adults who totaly abstain from alcohol changed? what is the zo= what is the p value= reject null hypothesis

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.5: Interpreting Data
Problem 1C
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(B) has the proportion of adults who totaly abstain from alcohol changed?

  • what is the zo=
  • what is the p value=
  • reject null hypothesis
In 1943, 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, 440 indicated that they were total abstainers. In a
recent survey, the same question was asked of 1100 adults and 374 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 1943 survey and the recent survey who were total abstainers are
and , respectively.
(Round to three decimal places as needed.)
Transcribed Image Text:In 1943, 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, 440 indicated that they were total abstainers. In a recent survey, the same question was asked of 1100 adults and 374 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 1943 survey and the recent survey who were total abstainers are and , respectively. (Round to three decimal places as needed.)
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