In an natural observational study investigators
observe subjects and measure variables
of interest without assigning treatments to
the subjects
In an experimental study (inferential stat), data are used to make generalizations about a population based on a sample.
Hence the 1st question is an experimental.
Answer:
estamos diciendo que es joven, es débil y necesita a su madre para vivir. también estamos diciendo que es pequeño y necesita desarrollarse
Answer:
b upper middle class
Explanation:
because of term high income
