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In: Statistics and Probability

Find confidence interval for population mean. The principal randomly selected six students to take an aptitude...

Find confidence interval for population mean.

The principal randomly selected six students to take an aptitude test. Their scores were:

71.5     80.4    77.1 86.5    82.1 72.3

Determine a 90% confidence interval for the mean score for all students. Round to 2 decimal places.

73.52 < μ < 83.11

73.42 < μ < 83.21

83.21 < μ < 73.42

83.11 < μ < 73.52

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