Many celebrities and public figures have Twitter accounts with large numbers of followers. However, some of these

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Many celebrities and public figures have Twitter accounts with large numbers of followers.

However, some of these followers are fake, resulting from accounts generated by spamming computers. In a sample of 46 twitter audits, the mean percentage of fake followers was 14.1 with a standard deviation of 9.6.

a. Construct a 90% confidence interval for the mean percentage of fake Twitter followers.

b. Based on the confidence interval, is it reasonable that the mean percentage of fake Twitter followers is less than 10?

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Elementary Statistics

ISBN: 9781259969454

3rd Edition

Authors: William Navidi, Barry Monk

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