Question

a) identify the population of interest in the study.
o the researchers
o the 600 asthma patients aged 18 - 69 who rely on medication for asthma treatment
o all asthma patients aged 18 - 69 who rely on medication for asthma treatment
o all asthma patients from all ages who rely on medication for asthma treatment
b) identify the sample in this study.
o all asthma patients from all ages who rely on medication for asthma treatment
o all asthma patients aged 18 - 69 who rely on medication for asthma treatment
o the researchers
o the 600 asthma patients aged 18 - 69 who rely on medication for asthma treatment
c) can the results of the study can be generalized to the population?
o it depends. if the sample is randomly selected and representative of the entire population, then the results can be generalized to the target population.
o no, the results cannot be generalized to the target population.
o yes, the results can be generalized to the target population.
d) can the findings of the study be used to establish causal relationships?
o since this study is observational, the findings can be used to infer causal relationships.
o since this study is experimental, the findings can be used to infer causal relationships.
o since this study is experimental, the findings can be used to infer causal relationships.
o since this study is observational, the results cannot be used to infer causal relationships.

Explanation:

a) The population of interest is the entire group that the study aims to draw conclusions about. Here, it's all asthma patients aged 18 - 69 who rely on medication for treatment.
b) The sample is the subset of the population actually studied, which is the 600 asthma patients aged 18 - 69 who rely on medication.
c) Generalization depends on if the sample is randomly selected and representative. Without that information, we can't be sure.
d) Observational studies can't establish causal relationships as they don't control variables like experimental studies do.

Answer:

a) all asthma patients aged 18 - 69 who rely on medication for asthma treatment
b) the 600 asthma patients aged 18 - 69 who rely on medication for asthma treatment
c) It depends. If the sample is randomly selected and representative of the entire population, then the results can be generalized to the target population.
d) Since this study is observational, the findings cannot be used to infer causal relationships.