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

Consider a bag that contains 220 coins of which 6 are rare indian pennies. for the given pair of events a and b, complete parts (a) and (b) below. a: when one of the 220 coins is randomly selected, it is one of the 6 indian pennies. b: when another one of the 220 coins is randomly selected (with replacement), it is also one of the 6 indian pennies. a. determine whether events a and b are independent or dependent. b. find p(a and b), the probability that events a and b both occur.