1. Is a and 3 is d easiest stuff I ever learned
Answer:
In economics, the term household refers to the members of a home. This is used to make social and economic models.
Household is made up of each of the people who live in a home. Most of the companies' productions are directed to this group.
As for the firm, it is who is going to use the production factors in order to manufacture products or services that the previous group will consume.
Answer:
Researchers typically use random assignment.
Explanation:
Random assignment is when a researcher uses chance to make sure all participants have the <em>same opportunity to be in either group</em> during an experiment. It is used to decide in which group the now selected participants will be in.
An example of random assignment is the<em> flip of a coin. </em>
The more pens<span> a </span>President<span> uses, the more thank-you gifts he can offer to those who helped create that piece of history. The White House often engraves the </span>pens<span>, which are then given as keepsakes to key proponents or supporters of the newly </span>signed <span>legislation.</span>
I can't answer this is in Spanish