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You wish to estimate, with 95% confidence, the population proportion of U.S. adults who want more funding for alternative energy. Your estimate must be accurate within 4% of the population proportion. a) No preliminary estimate is available. Find the minimum sample size needed. b) Find the minimum sample size needed, using a prior study that found that 78% of U.S adults want more funding for alternative energy. c) Compare the results from parts (a) and (b).

You wish to estimate, with 95% confidence, the population proportion of U.S. adults who want more funding for alternative energy. Your estimate must be accurate within 4% of the population proportion. a) No preliminary estimate is available. Find the minimum sample size needed. b) Find the minimum sample size needed, using a prior study that found that 78% of U.S adults want more funding for alternative energy. c) Compare the results from parts (a) and (b).

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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You wish to estimate, with 95% confidence, the population proportion of U.S. adults who want more funding for alternative energy. Your estimate must be accurate within 4% of the population proportion. a) b) c) No preliminary estimate is available. Find the minimum sample size needed. Find the minimum sample size needed, using a prior study that found that 78% of U.S adults want more funding for alternative energy. Compare the results from parts (a) and (b).
Transcribed Image Text:You wish to estimate, with 95% confidence, the population proportion of U.S. adults who want more funding for alternative energy. Your estimate must be accurate within 4% of the population proportion. a) b) c) No preliminary estimate is available. Find the minimum sample size needed. Find the minimum sample size needed, using a prior study that found that 78% of U.S adults want more funding for alternative energy. Compare the results from parts (a) and (b).
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