QBA II Hypothesis Tests
... ) After conducting hypothesis tests for the random samples using a .01 level of significance, I have determined that sample I, sample II, and sample IV do not require any corrective action to be taken and the process is operating satisfactorily for these particular samples. ... 01563, sample II has a z = . ... 22035, sample II standard dev = . ... 87 Sample II: 12. ... However, samples I, II, and IV are all within limits, therefore we must fail to reject Ho in these cases with 95% confidence.