Thirty randomly selected students took the calculus final

Reference no: EM13470789

Thirty randomly selected students took the calculus final. If the sample mean was 89 and the standard deviation was 6.2, construct a 99% confidence interval of the mean score of all students. Assume that the population has a normal distribution.

A. 85.89<µ<92.11

B. 85.88<µ<92.12

C. 87.08<µ<90.92

D. 86.21<µ<91.79

Reference no: EM13470789

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