What types of knowledge regarding this problem cannot be credibly and dependably generated using qualitative methodology?

Assessment Description

To maximize the effectiveness of a planned campaign to raise community awareness of available services, a mental health provider has contracted a researcher to investigate how residents in an urban immigrant community seek mental health services. What types of useful knowledge could the researcher generate using qualitative methodology to investigate this problem? Explain. What types of knowledge regarding this problem cannot be credibly and dependably generated using qualitative methodology? Explain.

Note: Rather than providing insights into the topics of mental health, immigration, or urban community services, focus your discussion post on the research methodology, research design, and data collection process to resolve this applied research example.