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g a. A 99% confidence level and a sample of 24 observations. 2.807 2.807 Correct b. A 90% confidence level and a sample of 24 observations. 1.714 1.714 Correct c. A 99% confidence level and a sample of 20 observations. 2.845 2.845 Incorrect d. A 90% confidence level and a sample of 20 observations.

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Answer: b. A 90% confidence level and a sample of 24 observations. 1.714 1.714 Correct

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