A researcher wishes to estimate, with 99% confidence, the population proportion of adults who think Congress is doing a

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A researcher wishes to estimate, with 99% confidence, the population proportion of adults who think Congress is doing a

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A Researcher Wishes To Estimate With 99 Confidence The Population Proportion Of Adults Who Think Congress Is Doing A 1
A Researcher Wishes To Estimate With 99 Confidence The Population Proportion Of Adults Who Think Congress Is Doing A 1 (139.53 KiB) Viewed 9 times
A researcher wishes to estimate, with 99% confidence, the population proportion of adults who think Congress is doing a good or excellent job. Her estimate must be accurate within 2% of the true proportion. (a) No preliminary estimate is available. Find the minimum sample size needed. (b) Find the minimum sample size needed, using a prior study that found that 46% of the respondents said they think Congress is doing a good or excellent job. (c) Compare the results from parts (a) and (b).
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