stat211 spring97 quiz3 - 9 mm 9/9/9/9" rm?“"-rw...

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Unformatted text preview: 9 / mm] 9/9/9/9" rm?“ "-rw/ / ’Ié QUI“3 ‘9 7 ' ST’AT‘211' ' V vvvvv I OPEN NOTES/BOOK 7 Spring Quarter, 1997 WORTH 50 POINTS [email protected] 0 Heather Smith 7 POINTS PER QUESTION g 439799.? | | -—O (p 2! SHOW ALL WORK FOR CREDIT !! Suppose you place an order for two different items with your favorite mail order company (say, LL. Bean). Let F denote the event that the first item you order 18 out of stock. Let S denote the event that the second item you order 15 out of stool? «81C? 99 92> 795 Now suppose that: P(F) = 0.35 P(S) = 0 60 9 P(F and Sign = O 20": For each of the following statements (a- t), express it in a probability statement andtlién ompute /‘the probability that the event occurs. 3) Both items are out of stock. was Ivan—99:3 VGWMJJ’” W209 _ I . 393+ IMO/29,) ,, ”a; V f AAAAA I //9 9.9/91)“ 597" :9”); c) Exactly one of the items is out of stock (1) Neither of the items is out of stock. 9- Wwe : I“ 97% L959 9/ e) The second item is out of stock given that the first item is out of stock. 92 (<99 F”) a: 9199 999:9{99 I 3:5; «E9 / 99/47 '9W‘ ‘ I/{«";;V.x'j ‘ t) Are events F and S independent? Exp in. W 29996 We $919169 nAeIu 9% C399?) 2/9/4M Vain-MO (99111 £90129 9/0 999999 (’99:: emu/9; didnwg V\f9I VOW 9 99999999999“ W9 99% M99969 91w, 9399‘II “W JEOLMWA ”(W W 939999 N) \WWéHDVVV WC 90 999991999999999;9 ...
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