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Use the confidence level and sample data to find a confidence interval for estimating the populationm. A group of 56 randomly selected students have a

Use the confidence level and sample data to find a confidence interval for estimating the populationm. A group of 56 randomly selected students have a mean score of 30.8 with a standard deviation of 4.5 on a placement test. What is the 90 percent confidence interval for the mean score,m, of all students taking the test?

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