A mixed cost is a cost that consists of both the fixed and the variable component. An example is utility.
It should be noted that as the level of activity increases, the mixed cost in total will increase while mixed cost per unit will reduce. This is because there'll be an increase in unit which will ideally lead to reduction in the per unit while total mixed cost increase.
Based on the information provided within the question it seems that the statement is typical of Job classification. This term refers to a set of information classifying a job based on the duties or responsibilities that the specific job entails. Which seems to be what the statement is referring to as it says "for which the duties are to be performed with minimal supervision" etc.
It is a prediction made from the results of some data that have been taken as the basis of an investigation.
Explanation:
A hypothesis is a conjecture or assumption made from a sample of data that serves as the basis for initiating an investigation, and its results yield what can be expected upon execution.
C). information systems existing on different management levels
Explanation: it integrates information across financial management, supply chain management, human resource management, production and design development and so on.
