Two manufacturing processes are used.
Process 1: 151, 150, 154, 149, 150, 148, 144, 148, 152, 151, 150, 149, 152, 151
Process 2: 152, 151, 149, 153, 152, 148, 152, 151, 148, 153, 152, 151, 149, 150
Can you conclude at the 5% level that one way yields a different mean value than the other?
Can you conclude at the 5% level that the variance of process 2 is lower than that of process 1?