A training program is used by a corporation to direct hirees to appropriate jobs. The program consists of two steps. Step I identifies 33% as management trainees, 62% as nonmanagerial workers, and 5% to be fired. In step II, 71% of the management trainees are assigned to managerial positions, 24% are assigned to nonmanagerial positions, and 5% are fired. In step II, 60% of the nonmanagerial workers are kept in the same category, 12% are assigned to management positions, and 28% are fired. What is the probability that a randomly chosen hiree will be fired at the end of the training period?
This question is solved using the tree diagram which is given below.
P(Fired) = P(Fired in step I) + P(management trainee in step I and fired in step II) + P(nonmanagerial worker in step I and fired in step II)
= 0.05 + (0.33 * 0.05) + (0.62 * 0.28)
= 0.2401
Therefore, the probability that a randomly chosen hiree will be fired at the end of the training period is 0.2401
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