OpenStax, Introductory Statistics 2e §8.3 A Population Proportion · Example 3 · Statistics · Confidence intervals
A Population Proportion · Example 3
A random sample of 25 statistics students was asked: “Have you smoked a cigarette in the past week?” Six students reported smoking within the past week. Use the “plus-four” method to find a 95% confidence interval for the true proportion of statistics students who smoke.
OpenStax, Introductory Statistics 2e · §8.3 A Population Proportion · Example 3
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