The manufacturing of polymers for use in medicine is a prolific field of the chemical industry. We suppose that the quantity "X" of polymer (measured in mg) in a certain formulation is normally distributed. A sample of 10 measurements from X is given below: 603 534 534 542 591 680 489 516 570 592 654 We want to test Ho 530 versus H > 530 at the significance level a = 0.02 . What is the decision and the value of the test statistic ($t_{0}$), based on given observations. None of them Fail to reject Ho; to = 2.489 Reject Ho; to = 2.489 Fail to reject Ho%; to = 1.432 Reject Ho; to = 1.961 Fail to reject Ho%; to = 1.961 Reject. He to . - - 1 432