In the population of New Town, 30 percent of the people work for Bigg Corporation, 50 percent work in the public section, and 20
percent are self-employed. In a survey of 100 residents of New Town, 30 people worked for Big Corporation, 50 people worked in the public sector, and 20 people were self-employed. This sample was _________.
The sample is a stratified random sample in the sense that each of the population that was sampled consisted of the necessary groups that need to be considered in their right proportion of representation which makes the sample valid for us to reasonably draw a conclusion of what to expect in the larger sample space. This sample favours every possible member of the population and helps us adequately plan for all
The answer is B, -12p² - 12pq + 2p - 3q² + q. You have to distribute each term using FOIL, which is First, Outside, Inside, and Last. Then you have to combine like terms and order the variable correctly.
