Friday
July 25, 2014

Homework Help: statistics

Posted by Tom on Tuesday, July 30, 2013 at 1:52pm.

In a poll of 700 selected people in the USA who are 50 years or older, 20% said they would prefer a complete overhauling of the social security system. Estimate the population proportion of the USA of 50 years or older who would prefer a complete overhauling of the social security system. Use a 95% confidence level. What is the minimum number of people required that would give a sampling error of only 5%?

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