Question: 09:15 @ &5 @& O X FT'Vo: i B97% QUESTION 16 (4 Marks) It is known that smoking can cause lung cancer. In South Africa,

09:15 @ &5 @& O X FT'Vo: i B97% QUESTION 16 (4 Marks) It is known that smoking can cause lung cancer. In South Africa, 90% of lung cancer sufferers are smokers. A random sample of 20 cancer sufferers in South Africa is chosen. What is the probability that 80% of them are smokers? A.0.0432 B.0.1330 C.0.0898 D. 0.8670 QUESTION 17 (4 Marks) A student answers 10 questions in a multiple-choice test. The questions are set up so that they do not depend on one-another. Each question has 5 possible answers, only one of which is correct. What is the probability that the student answers at least one correct answer? A.0.0005 B. 0.8926 C.0.2684 D.0.1074 QUESTION 18 (4 Marks) At a particular restaurant, an average of 4 plates are broken each week. What is the probability that 2 plates are broken next week? A.1.0827 B.0.0122 C. 0.1465 D. 0.0366 QUESTION 19 (4 Marks) For a Poisson distribution with , what is the probability that no events occur ? A.0.0183 B.0.0733 C.0.1353 D.0.1839 QUESTION 20 (4 Marks)

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