OpenStax, Statistics §8.3 A Population Proportion · Exercise 2 · Statistics · Confidence intervals
A Population Proportion · Exercise 2
Marketing companies are interested in knowing the population percentage of women who make the majority of household purchasing decisions.
If it were later determined that it was important to be more than 90 percent confident and a new survey were commissioned, how would it affect the minimum number you need to survey? Why?
OpenStax, Statistics · §8.3 A Population Proportion · Exercise 2
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