Answer:
There are two fundamentally different types of experimental error. Statistical errors are random in nature: repeated measurements will differ from each other and from the true value by amounts which are not individually predictable, although the average behavior over many repetitions can be predicted.
Answer: B totalitarianism
All of the rest, excluding this one, would be a form of government that is widely used and also authorized.
The correct answer is a mixed economy.
A Mixed Economy is one where there is a mix of private and public enterprises present. Since the question indicated that there are private enterprises as well as public transportation and electricity, this is an example of a mixed economy.