A psychologist is interested in testing the correlation between a person's annual income and d1eir overall happiness score based on a robust questionnaire that yields a standardized score. The researcher does not believe that a person's annual income will significantly impact their happiness, either positivelyr or negatively. A large random sample of individuals is collected to test the psychologist's claim. a. Determine what population parameter is being tested: b. Determine if the alternative hypothesis is a left-tailed, right-tailedr or twotailed test: CI =5 : lefttailed CI :- : right-tailed CI :5 :mo-tailed