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Use the given degree of confidence and sample data to construct a confidence interval for the population mean. Assume that the population has a normal

Use the given degree of confidence and sample data to construct a confidence interval for the population mean. Assume that the population has a normal distribution.

Question: Thirty randomly selected students took the calculus final. If the sample mean was 85 and the standard deviation was 6.6, construct a 99% confidence interval for the mean score of all students. Interpret the result.

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