Question

Quiz: LP03 Computational Quiz This Question: 1 pt 2 of 20 (0 complete) Use the contingency table to the right to determine the probability of events. a. What is the probability of event A? b. What is the probability of event A'? c. What is the probability of event A and B? d. What is the probability of event A or B? A A BB' 80 10 10 30 a. The probability of event A is . (Type an integer or decimal rounded to three decimal places as needed.) b. The probability of event A'is (Type an integer or decimal rounded to three decimal places as needed.) c. The probability of event A and B is - (Type an integer or decimal rounded to three decimal places as needed.) d. The probability of event A or Bis I. (Type an integer or decimal rounded to three decimal places as needed.)

Answer 1

1 Total i I 10 1 90 10 90 30 I 40 40 130 130 a) PCA) = 20 = 0.692307 = 0.692 ... The probability of event A 15 0.692 b) PCA!) = = 0307692 = 0.308 C . The probability of event A as 10.308] - a PCANB) = 80 = 0.615384 = 0.615 The probability of event A and event B is 10.615 d) PCB) = 90 - 0.692 PCA or B) = P(A)+PCB) - P(ANB) = 0.69270-692-0.615 = 0.769 - The probability of event A or B is 0.769