Please find support for the following statements:

1) "Quantitative research methods lack the depth, insight, and
richness that can be achieved by qualitative methods".

2) "Many new immigrants in Canada struggle with two jobs" (trying to
seek economic security; if you can find a citation on Chinese-Canadian
immigrants, even better).

3)"Striving to improve one's lifestyle is a motivating factor for
immigrating to a new country" (e.g. better job opportunities, social
conditions, education for kids).

Please use reputable sources such as Statistics Canada, Citizen &
Immigration Canada, academic journals/webpages.

I am not good at finding things on the internet, but we can apply
logic to the hypothesis you have asked about. I think 1 is false
except a combination of the two methods is much superior to either at
the exclusion of the other. Is one mm big, or far? It depends on the
subject. Nanotechnology or astronomy? A specific example is often far
more informative than many pages of generalities which are
qualitative.
 2 If you were an employer would you want to try to train a recent
immigrant, who understood little English and had different costoms and
habits than your other employees? Likely you will hire the imigrant
only to do work that requires little training and then only if the
imigrant will work for minimum wage or less. Since many immigrants are
low paid, it follows that some will work two jobs to try to stay above
the poverty level. Two jobs is typically a disadvantage to the
employer, as it means the employee will rarely be available to work a
different shift or overtime, and other conflicts of interest may
occur.
 3 This is intuitively obvious. Imigrants may have other reasons for
coming to Canada, but this is likely strong motivation for at least
1/2 of the immigrants. The extensive Socialim is also a motivation as
they know they can subsist even if they fail. but I believe most
immigrants come with strong intentions of success even if it is
difficult.   Neil