Researchers who examined health records of thousands of males found that men who died of myocardial infarction​ (heart attack) tended to be shorter than men who did not. 1) Is this an​ experiment? If​ not, what kind of study is​ it?
​2) Is it correct to conclude that shorter men are at higher risk of dying from a heart​ attack? Explain.
A. Yes, since the result is considered to be statistically significant.
B. ​No, since there may be confounding variables interfering with the​ treatment, such as patient age or weight.
C. ​No, since it cannot be determined which of the subjects will die from heart attacks in the future.
D. ​No, since there may be lurking​ variables, such as patient age or weight.