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33 a) A researcher wishes toestimate, with 95% confidence, the population proportion of adults who support labeling legislation for genetically modified organisms(GMOs). Her estimate must

33 a) A researcher wishes toestimate, 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 sizeneeded, using a prior study that found that 76% 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 isavailable?

n=

(Round up to the nearest whole number asneeded.)

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