Please answer both parts A and B as I am very confused on how to get to the answer. Thank You!

Suppose that a computer chip company has just shipped 5,000 computer chips to a computer company. Unfortunately, 40 of the chips are defective. {a} Compute the probability that hm randomly selected chips are defective using conditional probability. lb} The probability that the rst randomly selected chip is defective is 4t} 5 000 = 0.008 = 0.8%. Compute the probability that two randomly selected chips are defective under the assumption of independent events. {a} The probability is . (Round to eight decimal places as needed .}