Masters-at-Work was founded by two brothers in Atlanta to provide in-home computer and electronic installation services as well as tech support to solve hardware, software, or computer peripheral crises. Masters-at-Work became highly successful with branches throughout the South and was purchased by Best Buy but continued to operate under the Masters-at-Work name. A shipment of 20 Intel ® Pentium ® 4 processors was sent to Masters-at-Work. Four of them were defective. One of the Masters-at-Work technicians selected 5 of the processors to put in his parts inventory, and went on three service calls.
a. Determine the probability that only 1 of the 5 processors is defective.
b. Determine the probability that 3 of the 5 processors are not defective.
c. Determine the probability that the technician will have enough processors to replace 3 defective processors at the repair sites.