The mean GPA of all 6000 students at a college is 2.04 . A sample of 75 GPAs from this school has a mean of 2.23 . Which number is mu and which is x overbar ? Question content area bottom Part 1 Choose the correct answer below. A. The population mean is x overbar equals2.04, and the sample mean is mu equals2.23 . B. The statistic is mu equals2.04, and the parameter is x overbar equals2.23 . C. The population mean is mu equals2.04, and the sample mean is x overbar equals2.23 . D. The statistic is x overbar equals2.04, and the parameter is mu equals2.23