Samples of two types of aluminum rods were tested for their weight, in pounds, and the following data was collected. Type I 1.21 1.19 1.27 1.24 1.18 1.23 1.15 Type II 1.25 1.20 1.27 1.23 1.19 1.25 1.30 Is the difference in the means sufficient to say that Type I and Type II aluminum rods have the same weight at a 5% level of significance? (Use: The tabulated value of for 12 degrees of freedom at a 5% level of significance is 2.18.) The two types of aluminum rods have the same weight, because . The two types of aluminum rods have the same weight, because . The two types of aluminum rods do not have the same weight, because . The two types of aluminum rods do not have the same weight, because