The bank manager now wants to determine the cause andeffect relationship between the interest rate and the inducement it offers to clients to save and deposit money in the bank. She selects four branches within a 60mile radius for the experiment. For one week only, she advertises the annual rate for new certificates of deposit received during that week in the following manner: the interest rate will be 9% in one branch, 8% in another, and 10% in the third. In the fourth branch the interest rate remains unchanged at 5%. Within the week, she will be able to determine the effects, if any, of interest rates on deposit mobilization. Identify the research strategy in the above mentioned case? Justify your