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March 29, 2015

Homework Help: statistics

Posted by Diana on Sunday, October 14, 2012 at 6:04pm.

A researcher wishes to estimate with 95% confidence the proportion of adults who have high speed internet access. Her estimate must be accurate within 4% of the true proportion.
1. Find the minimum sample size needed using a prior study that found that 48% of the respondents said they have high speed internet access
2. No preliminary estimate is available. Find the minimum sample size needed.

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