1.) Collect and analysis data to answer questions or to draw conclusions.
3.) Individual.
5.) Statistic.
7.) Parameter.
9.) Statistic.
11.) Parameter.
13.) Parameter.
15.) Qualitative.
17.) Quantitative.
19.) Quantitative.
21.) Quantitative.
23.) Discrete.
25.) Continuous.
27.) Continuous.
29.) Discrete.
39.) Population: teenagers who are 13 to 17 years of age and live in the United States. Sample: 1028 teenagers selected to attend the study.
40.) Population: Coca-Cola that were filled on October 15. Sample: 50 bottles being selected.
41.) Population: soybean crop. Sample: 100 plants being selected.
42.) Population: all the households. Sample: 50,000 households being surveyed.
13.) Observational study.
14.) Observational study.
15.) Experiment.
16.) Observational study.
17.)
a) Cohort Study, because the research follows the participants for a long time to observe and get the information.
b) Response variable: the risk of heart disease
Explanatory variable: the level of happiness
c) It means that probably a confounding study is needed or there're lucking variables need to be consider.