It established the idea of the “separate but equal.” It ruled segregation violated the rules of the Constitution. It created laws to make separate facilities equal for all races. It generated interest in the link between grades and emotions.
1. Make more money 2. Become less disonantes 3. I don’t know this one
The answer is Peru, i believe. Please correct me if i am wrong
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.
OPEC, its the countries that make/ produce oil for us. They are mostly in the Middle East
