OpenStax, Statistics §8.3 A Population Proportion · Exercise 1 · Statistics · Confidence intervals
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?
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OpenStax, Statistics · §8.3 A Population Proportion · Exercise 1
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