A Researcher Wishes To? Estimate, With 99?% ?Confidence, The Population Proportion Of Adults Who Say Chocolate

Question # 00794144 Posted By: 175 Updated on: 02/15/2021 09:22 AM Due on: 03/09/2021
Subject Statistics Topic General Statistics Tutorials:
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A researcher wishes to? estimate, with 99?% ?confidence, the population proportion of adults who say chocolate is their favorite ice cream flavor. Her estimate must be accurate within 4?% of the population proportion.

(a) What is the minimum sample size needed assuming that no prior information is? available?

?(b) Find the minimum sample size? needed, using a prior study that found that 20?% of the respondents said their favorite flavor of ice cream is chocolate.

?(c) Compare the results from parts? (a) and? (b).

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