In practice, one must decide whether to treat two events as independent based on an understanding of the process that creates them. For example, in a manufacturing process that produces electronic circuit boards for calculators, assume that the probability that a board is defective is 0.01. You arrive at the manufacturing plant and sample the next two boards that come off the assembly line. Let A be the event that the first board is defective, and let B be the event that the second board is defective. Describe circumstances under which A and B would not be independent.