A random sample of 25,000 ACT test takers had an average score of 21 with a standard deviation of 5. What is the 95% confidence interval of the population mean?

A. 4.9723 to 5.0277
B. 4.9380 to 5.0620
C. 4.7397 to 5.2603
D. 4.9432 to 5.0568


Answer: B

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What will be an ideal response?

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