Samples of the wires coming off the production line were tested for tensile strength. The statistical results (in PSI) were: Mean 500 Range 240 Standard Devaition 40 Sample Size 100 According to the Empirical Rule, the middle 95 percent of the wires tested between approximately what two values? A. 450 and 550 B. 460 and 540 C. 420 and 580 D. 380 and 620