A random sample of 30 business students required an average of 43.4 minutes to complete a statistics exam. Assume that the population standard deviation to complete the exam was 8.7 minutes. The margin of error for a 98% confidence interval around this sample mean is ------.
A) 3.12
B) 3.70
C) 2.04
D) 2.62
Correct Answer:
Verified
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