QUESTION 13 An analyst is conducting a hypothesis test to determine if the mean time spent on investment research by portfolio managers is different from 3 hours per day. The test uses a random sample of 64 portfolio managers, where the sample mean time spent on research is found to be 2.5 hours. The population standard deviation is 2 hours. What is the 99% confidence interval for the population mean time spent on investment research by portfolio managers? A) (2.02,2.98) B) (2.22.3.18) C) (1.86, 3.14) D) (2.11.2.89) < Previous Next > B.

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