A population has standard deviation 12 7 a How large a sample must be drawn so that a 96 confidence interval for will have a margin of error equal to 2 5 b If the required margin of error were 1 5, would the necessary sample size be larger or smaller ...

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A population has standard deviation = 12.7. a. How large a sample must be drawn so

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A population has standard deviation σ = 12.7.

a. How large a sample must be drawn so that a 96% confidence interval for μ will have a margin of error equal to 2.5?

b. If the required margin of error were 1.5, would the necessary sample size be larger or smaller?

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Elementary Statistics

ISBN: 9781259969454

3rd Edition

Authors: William Navidi, Barry Monk

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Question Posted: May 07, 2024 04:02 AM

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A population has standard deviation = 12.7. a. How large a sample must be drawn so

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Elementary Statistics

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