Chapter 12: Suppose Citibank would like to investigate if credit score and age of an individual are independent of one another. Citibank selected a random sample of 400 adults and asked them to report their credit score range and their age range. The following contingency table presents these results. Age Less than 30 30 to less than 40 40 to less than 50 50 and older Less than 650 36 68 40 6 Credit Score 650-750 20 48 25 27 More than 750 24 44 35 27 (30%) Perform a hypothesis test to determine if the credit score and the age of the individual are independent variables using = 0.05