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construct a confidence interval for...

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

Thirty randomly selected students took the calculus final. If the sample mean was 83 and the standard deviation was 13.5, construct a 99% confidence interval for the mean score of all students.

76.21 < mu < 89.79

76.23 < mu < 89.77

76.93 < mu < 89.07

78.81 < mu < 87.19

Thirty randomly selected students took the calculus final. If the sample mean was 83 and the standard deviation was 13.5, construct a 99% confidence interval for the mean score of all students.

76.21 < mu < 89.79

76.23 < mu < 89.77

76.93 < mu < 89.07

78.81 < mu < 87.19

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