p-hat, the sample proportion of adults who respond yes, is approximately normal, how many more adult Americans does the researcher need to sample in the following cases? (a) 15% of all adult Americans support the changes (b) 20% of all adult Americans support the changes
p-hat, the sample proportion of adults who respond yes, is approximately normal, how many more adult Americans does the researcher need to sample in the following cases? (a) 15% of all adult Americans support the changes (b) 20% of all adult Americans support the changes
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
Related questions
Question
A researcher studying public opinion of proposed Social Security changes obtains a simple random sample of
30 adult Americans and asks them whether or not they support the proposed changes. To say that the distribution of
p-hat, the sample proportion of adults who respond yes, is approximately normal, how many more adult Americans does the researcher need to sample in the following cases?
(a)
15% of all adult Americans support the changes
(b)
20% of all adult Americans support the changes
a. The researcher must ask enter your response here
more American adults. (Round up to the nearest integer.)
more American adults. (Round up to the nearest integer.)
b. The researcher must ask enter your response here
more American adults. (Round up to the nearest integer.)
more American adults. (Round up to the nearest integer.)
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