A simple random sample of 125 SAT scores has a mean of 1522. Assume that SAT scores

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A simple random sample of 125 SAT scores has a mean of 1522. Assume that SAT scores have a standard deviation of 333.

a. Construct a 95% confidence interval estimate of the mean SAT score.

b. Construct a 99% confidence interval estimate of the mean SAT score.

c. Which of the preceding confidence intervals is wider? Why?

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Elementary Statistics

ISBN: 9780321500243

11th Edition

Authors: Mario F. Triola

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Question Posted: Jul 29, 2022 02:30 AM

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A simple random sample of 125 SAT scores has a mean of 1522. Assume that SAT scores

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Elementary Statistics

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