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October 20, 2014

Homework Help: Basic Statistics

Posted by Tammy on Thursday, March 22, 2012 at 3:07pm.

Historically, the proportion of adults over the age of 24 who smoke has been estimated to be .30. You want to take a sample to estimate the current proportion of adults over the age of 24 who smoke within 3% at 95% accuracy. When you completed the sample you found that 114 of those adults sampled over the age of 24 smoked. Develop a 95% confidence interval for the current proportion of adults over the age of 24 who smoke.

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