Quiz 3 Key STA 201 Fall 17.pdf

# Quiz 3 Key STA 201 Fall 17.pdf - SEAT NUMBER Department of...

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Unformatted text preview: SEAT NUMBER: Department of Mathematics and Statistics QUIZ #3 STA 201 October 2, 2017 01114 Pts] If P(A) = 0.5, 13(3) = 0.6, and P(A uB) = 0.9 9. 21. Find the following probabilities: 1) P(A n B) fawn): 3(A)*f(r;)/£ (A03) “‘1 7 9'5 *°-6 «HA/vs) 5>(f(ma)=°¢i 1 2) P(AnB‘) if?) ’ftqﬂé) : p.5r0-‘L [email protected] 2. 3) P(AcuBc) , ‘) 5 J/fU-me) ¢@ 7’ 4) P(AIB) \$29,092 :3; r. % £03) a“ L 5) mm .2, b. Are the events) A and 3 independent? Explain your answer. 110mg) -: .6 (A 312 Le) 0.1 #(0.§)Cb.g) [V0.- IL c. What is the probability of an element being in at most one of the two events A d , an B? f((An96) 3E Page 2 of 2 Q2[6 Ptsl. Answer the following questions. Q. a). In how many ways we can select 3 people from 10 people to form a committee. ( 130) 2 b) In how many ways can 5 persons line up to get in a bus? 5’. g c) In how many ways can 5 persons line up to get in a bus if the persons A and B refuse to follow each other? ﬂ 5/1/va Amp A ”I“? 7‘” ”('7 J'ﬂf‘wt 5’. I #/“JJ’ .4115 Jar-ﬂy. I ,5! , 1/42! ...
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