Mathematics, 28.11.2019 05:31 RyannLambertt7141

Aresearcher wishes to estimate, with 95% 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) 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 38% 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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Aresearcher wishes to estimate, with 95% confidence, the population proportion of adults who say cho...