b What is the margin of error for this sample The margin of error is Round to

B what is the margin of error for this sample the

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b.What is the margin of error for this sample? . c.Is there any evidence that this proportion has changed since based on this sample?
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3/6/2020 Chapter 8 Homework-Jack Fearon 8/11 10.2: Cumulative Probabilities for the Standard Normal DistributionDetermine the sample size n needed to construct a % confidence interval to estimate the population mean when and the margin of error equals 90= 66 . 11 Click the icon to view a table of standard normal cumulative probabilities. 2 n (Round up to the nearest integer.) =
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3/6/2020 Chapter 8 Homework-Jack Fearon 9/11 11.3: Cumulative Probabilities for the Standard Normal DistributionDetermine the sample size n needed to construct a % confidence interval to estimate the population mean for the following margins of error when 95= 78a)15b)25c)30Click the icon to view a table of standard normal cumulative probabilities.3a)n(Round up to the nearest integer.) b)n(Round up to the nearest integer.) c)n(Round up to the nearest integer.) . = = =
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3/6/2020 Chapter 8 Homework-Jack Fearon 10/11 12.4: Cumulative Probabilities for the Standard Normal DistributionDetermine the sample size n needed to construct a % confidence interval to estimate the population proportion for the following sample proportions when the margin of error equals %.995a.p = 0.20b.p = 0.30c.p = 0.40Click the icon to view a table of standard normal cumulative probabilities.4a. n(Round up to the nearest integer.) b. n(Round up to the nearest integer.) c. n(Round up to the nearest integer.) = = =
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3/6/2020 Chapter 8 Homework-Jack Fearon 11/11
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