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The students collect a random sample of 45 students. The mean of the sample is 12.1...

The students collect a random sample of 45 students. The mean of the sample is 12.1 units. The sample has a standard deviation of 1.5 units.

What is the 95% confidence interval for the average number of units that students in their college are enrolled in? Assume that the distribution of individual student enrollment units at this college is approximately normal. (round to 2 decimal places)

ANSWER: (_____, _____)

Math   Statistics-And-Probability   
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