Answer:
they lasted for more than 200 years
I believe the answer is: Know training and nutrition theory and know how to teach it
Best trainers in sport do not necessarily doing the training themselves, but they possess a deep knowledge regarding the training and had the communication skills necessary to teach them to the players. (which is why you can see that a lot of trainers in NBA, NFL, or even boxing are really out of shape)
Answer:
B: No, this is an observational study and we cannot conclude causation
Explanation:
Observational study: In psychological research, the term observational study is defined as a non-experimental yet an empirical investigation lead by the researchers related to the effects being caused by a specific treatment.
An observational study is one of the types of correlational studies in which an experimenter or researcher tends to observe the behaviour of the subjects or participants.
An observational study does not prove or conclude causation because correlational studies can only determine the relationship between two different variables but can not prove or show causation which is being done by experimental studies.
