3. A sample of 10 cell phones consists of 1 defective and 9 good cell phones. A quality control technician wants to randomly select two of the cell phones for inspection. Find the probability that the first selected cell phone is good, and the second cell phone is also good. (Show all work. Just the answer, without supporting work, will receive no credit.)

(a) Assuming the two random selections are made with replacement.

(b) Assuming the two random selections are made without replacement