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Social Studies, 30.10.2019 19:31 Milanchik28

The bear alarm at grizzly's peak ski resort sounds an average of once every thirty days, but the alarm is so sensitively calibrated that it sounds an average of ten false alarms for every undetected bear. despite this, the alarm only sounds for three out of four bears that actually appear at the resort. if the alarm sounds, what is the probability that a bear has actually been sighted?

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