A Population Proportion · Exercise 1
Marketing companies are interested in knowing the population percentage 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 percent 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, Statistics · §8.3 A Population Proportion · Exercise 1
No hints for this one.
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