A sample of three calculators is selected from a manufacturing line, and each calculator is classified as either defective or acceptable. Let A, B, and C denote the events that the first, second, and third calculators, respectively, are defective. Sample space for this experiment could be described with a tree diagram. Let "d" denote a defective calculator and let "a" denote an acceptable calculator. calculator 1 d/ calculator 3 calculator 2 S = {ddd, add, dda, ada, dad, aad, daa, aaa} d

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