The mean GPA of all 5000 students at a college is 2.83 . A sample of 150 GPAs from this school has a mean of 2.42 . 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 mu equals2.83, and the sample mean is x overbar equals2.42 . B. The population mean is x overbar equals2.83, and the sample mean is mu equals2.42 . C. The statistic is x overbar equals2.83, and the parameter is mu equals2.42 . D. The statistic is mu equals2.83, and the parameter is x overbar equals2.42