The distribution subsystem continues to transmit the power to the customers. The utilization system is concerned with the different uses of electrical energy like illumination, refrigeration, traction, electric drives, etc. Utilization is a very recent concept in Power engineering.
Definition of LEVEL OF SIGNIFICANCE. : the probability of rejecting the null hypothesis in a statistical test when it is true âcalled also significance level.
1 As a general rule, the significance level (or alpha) is commonly set to 0.05, meaning that the probability of observing the differences seen in your data by chance is just 5%.  A higher confidence level (and, thus, a lower p-value) means the results are more significant.