Multiple Choice
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
Correct Answer:
Verified
Correct Answer:
Verified
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