The research error described above is an example of selection bias.
Selection bias takes place when, from a population of interest, a group of individuals is selected in order to construct a sample but without a proper randomization. The result is a sample which is not representative of the underlying population.
According to the example, the target population of the research comprises all students but the sample only includes boys. Hence, selection has not been random because it followed a gender criteria, and the results obtained using it cannot be applicable to the whole population because they are affected by a selection bias.
The goal is resource sharing
Answer: Type A
Explanation: Dr Frobish possesses a type A behavior pattern.
Type A behavior pattern is related to a high level of responsability in their work, which causes several biologic disruptions such as hypertension and mood changes, usually to an anger-related state.
C. optimistic reason being they happy and really exited for the future
America did not enjoy much of the early years because of continuous war. When entertainment came, it was a way of escaping from the tensions that war had brought. Advertisements, however, were more focused on the needs of an individual than of the many people. They tried to do research on the war to create an inviting atmosphere on their advertisements. Thus, it brings comfort to individual's needs. Brand names also came out on products to remember it.
