Answer:
The answer is a. the Justice Department.
Explanation:
The first departments that were created by Congress during George Washington’s presidency included the State Department (which was initially called Foreign Affairs), the Treasury Department, and the War Department; the post office (U.S. postal system) had already been in place before Congress created departments for State, Treasury, and War. The Justice Department was not among the first departments to be created; it was created decades later.
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.