1. For the study described in (1), explain how the researchers could have done a study to test the causal relationship between drinking green tea and incidence of cancer. 2. Explain the difference...

1. For the study described in (1), explain how the researchers could have done a study to test the causal relationship between drinking green tea and incidence of cancer.

2. Explain the difference between a descriptive research question and a predictive research question. Provide an example of each type of research question.