A researcher wishes to estimate, with 95% confidence, the population proportion of adults who support labeling legislation for genetically modified organisms (GMOs). Her estimate must be accurate within 3% of the true 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 84% of the respondents said they support labeling legislation for GMOs. (c) Compare the results from parts (a) and (b). (a) What is the minimum sample size needed assuming that no prior information is available? n= (Round up to the nearest whole number as needed.)

MATLAB: An Introduction with Applications
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A researcher wishes to estimate, with 95% confidence, the population
proportion of adults who support labeling legislation for genetically modified
organisms (GMOs). Her estimate must be accurate within 3% of the true
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
84% of the respondents said they support labeling legislation for GMOS.
(c) Compare the results from parts (a) and (b).
(a) What is the minimum sample size needed assuming that no prior
information is available?
n= (Round up to the nearest whole number as needed.)
Transcribed Image Text:A researcher wishes to estimate, with 95% confidence, the population proportion of adults who support labeling legislation for genetically modified organisms (GMOs). Her estimate must be accurate within 3% of the true 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 84% of the respondents said they support labeling legislation for GMOS. (c) Compare the results from parts (a) and (b). (a) What is the minimum sample size needed assuming that no prior information is available? n= (Round up to the nearest whole number as needed.)
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