A researcher wanted to know more about adults in the US who have a bachelor of arts in economics college degree and specifically what their mean salary was. The researcher collected a random sample of 55 adults in Los Angeles California with a bachelor of arts in economics college degree and found that their mean salary was $134,400. a) Identify the sample in this situation and explain why this is a biased sample based on the researcher's objective. Describe a population of interest that you could generalize the results of this study to