A bond analyst is analyzing the interest rates for equivalent municipal bonds issued by two different states. At a = 0.05, is there enough evidence to conclude that there is a difference in the interest rates paid by the two states? State A State B Sample size 40 40 Mean interest rate (%) 3.5 3.9 Population variance 0.02 0.03 Yes, because the test value -11.31 is outside the critical region -1.96