In a random sample of 1000 voters nationwide, 357 are found to support a particular candidate for the presidential elections. A. Find a 98% confidence interval for the fraction of the voting population in favor of the candidate. B. How large a sample is needed if we wish to be at least 95% confident that the sample proportion is within 0.02 of the true fraction of the voting population?
In a random sample of 1000 voters nationwide, 357 are found to support a particular candidate for the presidential elections. A. Find a 98% confidence interval for the fraction of the voting population in favor of the candidate. B. How large a sample is needed if we wish to be at least 95% confident that the sample proportion is within 0.02 of the true fraction of the voting population?
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.CT: Chapter Test
Problem 24CT: Show the sample space of the experiment: toss a fair coin three times.
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In a random sample of 1000 voters nationwide, 357 are found to support a particular candidate for the
presidential elections.
A. Find a 98% confidence interval for the fraction of the voting population in favor of the candidate.
B. How large a sample is needed if we wish to be at least 95% confident that the sample proportion is within
0.02 of the true fraction of the voting population?
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