Answer:
Sampling error
Explanation:
This is probably due to sampling error. The sampling error has the likelihood of occuring when the statistician fails to select a sample that could be a representation of the full population. The sample results are not a true representation of the true results from the entire population.
the null hypothesis tells us that no significant difference exists between the populations chosen, and any difference can be as a result of sampling error.
Answer:
The answer is D. It made it less time consuming and saved workers energy.
Because they actually belonged to the feudal lord who let serfs work on his land in exchange for food while at the same time the serfs were offered protection in times of despair and need.
