Fill in the blank. A random sample of 60 business students required an average of 50.7 minutes to complete a statistics exam. Assume that the population standard deviation to complete the exar minutes. The 98% confidence interval around this sample mean is Round to one decimal place as needed. O A. (49.8, 51.6) B. (45.4, 56.0) OC. (47.6, 53.8) O D. (48.9, 52.5)

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