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30 students were randomly selected from a large group of students taking a certain 5) calculus test. The mean score for the students in the

30 students were randomly selected from a large group of students taking a certain 5) calculus test. The mean score for the students in the sample was 78. Assume that = 14.5. Construct a 99% confidence interval for the mean score, , of all students taking the test.

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