When a temperature sensor surpasses a threshold, your local nuclear power facility alarms. Core temperature is gauged. Consider the Boolean variables A (alarm sounds), FA (faulty alarm), and FG (faulty gauge) and the multivalued nodes G (gauge reading) and T (real core temperature). Since the gauge is more likely to fail at high core temperatures, draw a Bayesian network for this area. c. Is your network polytree? Why/why not?
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