OpenStax, Statistics §8.3 A Population Proportion · Exercise 17 · Statistics · Confidence intervals
A Population Proportion · Exercise 17
A poll of 1,200 voters asked what the most significant issue was in the upcoming election. Sixty-five percent answered "the economy." We are interested in the population proportion of voters who believe the economy is the most important.
What would happen to the confidence interval if the level of confidence were 95 percent?
Its source prints no answer for this problem, so there's nothing to check against.
OpenStax, Statistics · §8.3 A Population Proportion · Exercise 17
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