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A researcher wishes to estimate, with 95% confidence, the proportion of adults who have high-speed Internet access. Her estimate must be accurate within 1% of the true proportion.

a.) Find the minimum sample size needed using a prior study that found that 54% of the respondents said they have high-speed Internet access.

b.) No preliminary estimate is available. Find the minimum sample size needed.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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