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Thirty randomly selected students took the calculus final
Thirty randomly selected students took the calculus final. If the sample mean was 94 and the standard deviation was 12.2, construct a 99% confidence interval for the mean score of all students.
A. 90.22 to 97.78
B. 87.86 to 100.14
C. 88.52 to 99.48
D. 87.88 to 100.12
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