OpenStax, Introductory Statistics 2e §8.3 A Population Proportion · Exercise 1 · Statistics · Confidence intervals
A Population Proportion · Exercise 1
Marketing companies are interested in knowing the population percent of women who make the majority of household purchasing decisions.
When designing a study to determine this population proportion, what is the minimum number you would need to survey to be 90% confident that the population proportion is estimated to within 0.05?
Its source prints no answer for this problem, so there's nothing to check against.
OpenStax, Introductory Statistics 2e · §8.3 A Population Proportion · Exercise 1
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