Use die conîingency table to the right to determine the probability of events. W

Question

Use die conîingency table to the right to determine the probability of events. What is the probabiltity of event A? What is the probability of event A? What is die probability of event A and B? What is the probability of event A or B? The probability of event A is (Type an integer or decimal rounded to three decimal places as needed.) The probability of event A' is Type an integer or decimal rounded to three decimal places as needed.) The probability of event A and B is Type an integer or decimal rounded to three decimal places as needed.) The probability of event A or B is (Type an integer or decimal rounded to three decimal places as needed.)

Explanation / Answer

Probability of event A = (80+70)/(80+70+30+30) = 0.7143

Probability of event B = (70+30)/(80+70+30+30) = 0.4762

Probability of event A and B = 70/(80+70+30+30) = 0.3333

Probability of event A or B = Probability of event A + Probability of event B - Probability of event A and B

= 1 - Probability of event A' and B'

= 0.8572

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