READ THE FOLLOWING SCENARIO TO ANSWER THE NEXT 2 QUESTIONS. Dr. Spаrrоw is а sоciаl psychоlogist who studies romantic relationships. Several researchers have found that there is a link between income and marital satisfaction (e.g., Dakin & Wampler, 2008). Dr. Sparrow is curious as to whether there is a causal link between the two variables, such that having a higher income causes higher levels of marital satisfaction. He is confident that he cannot reasonably or ethically manipulate people’s income level. He is also curious as to whether there is a causal link between these two variables or if two other variables (number of arguments and life satisfaction) can explain the relationship. He measures his three variables at one time with a survey in a sample of 124 married couples recruited from a local community center. Below are his results. DV: Marital Satisfaction Variable Beta (b) Significance (p) Income .69 .03 Number of arguments –.73 .01 Life satisfaction .13 .81