The average per capita income in Saudi Arabia and Bahrain is reported to be $42,000 in Saudi Arabia and 39,738 in Bahrain with a population standard deviation of $10,500 in both countries. A random sample of 50 employees from each of the countries resulted in the following sample statistics: For Saudi Arabia: n = 50 and x = $42,139 For Bahrain : n = 50 and X = $40,000 The point estimate for the difference between 2 population mean income in Bahrain and Saudi Arabia is: O O O $2,139 $2,139 $2,139 Cannot be determined.