stat 120

stat 120 - gig @gigw gum: $91M draw} 3 £ m 31.5,. mgr...

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Unformatted text preview: gig @gigw gum: $91M draw} 3 £ m 31.5,. mgr jag... W W6 “5&1? x M”: £2 $2 52. 53’ 5 P<Wt 5 have health Emsmramm§ 5;; {wag} 1. The manager of a bank recorded the amount 0 i f time each customer spent waiting in line during 929.! mpeak business hours one Monday. The freque my table below summarizes the results. Waiting Time Number of (minutes) §2ustomers - 0-3 14 4-7 Famfl...‘ 8-11 5 11m 5 12-15 KKK/43 16-19 7, 20-23 ': 3 24-27 2 ‘ Me’E $ .3: 5 Z If we randomly select one of the customers represented in the table, what is the waiting time is at least 12 minutes or between 8 and 15 minutes? A) 0.519 B) 0.63 C) W D) 0.2 probability that the U ,0“- s-s P531" least“ $1 wémmiefi batweam 8 and 35 mimui‘flfi} «mamm—m aaaa "7"“ g W1 W' J‘: r w .. 2. In one town, 70% of adu ts have heCIaTth insurance. What is the probability thamdults selected at random from the town gag-LL have health insurance? W” A) 0.086 B) 4.2 C) 0.118 D) 0.7 m a a g a a?“ 6 e%_ % Wm- r - jgfgg 3.. How manyb-digit numbers can be . d formed using the digits 1, 2, 3, 4, 5, 6) 7 3W3 not allowed? “ “ " if repetition of digits is A) 120 B) 16.807 that the student is a woman? A); B)i6_ 031 D).4_6. 133 13 133 87 $9.9 “fl WW 6. A bin contains 78 light bulbs of which 4 are defective. If the bin, find the probability that selected are A) 0.73 B) 0.769 C) 0.051 D) 0.949 5 light bulbs are randomly selected from good ones. V..._....__._.._._..._..._.._ g 7. A sample of 4 different calculators is randomly selected from a group containing 12 that are defective and 40 that have no defects. What is the probability that ofthe calculators is ? 0.38 B) 0.002 ) m 0.998 Q XWM afifié «g? ml W Hm s sew “i” 36h; 9. When 10 adults are tested for high blood pressure, the ct of at least 0 of the results are positive. A) None of the adults have high blood C) All of the adults have high blood pressure. pressure. ' B) Nine of the adults have high blood pressure. B) One of the adults have high blood pressure. 60W?§@Wém% (9‘? at gags?“ {swig aka migjl wit AJ w$ thé saluting ham watt hlmé Prsswt‘eo . i ple Ifmlmigmclock radiosjs randomly selected without replacement from the 8,0 antetd. The e tire atch will be rfejg'gtédd if at least one of those tested is defective. What is the probability that the entire batch will be rejected? A) 0.785 B) 0.0833 C) 0.0200 e? l i ' 10. In ffitcfi 8,000 clock radios M e. A a??? 5‘ 9:? 99 W 3 i “3/ L” j i i i i i I i i i i i i i i i i i i i i l I i I l | i i i i l l i i i | i I questions on the survey? A) 120 72 C) 6 D) 36 i g i i i i i i i i i | i i i i i i i i i i l i | _i gm.“ Use the following to answer questions 12-15: Based on these results given below, answer the following four questions: fl 0 E 13. What is the probability that a driver under 40(and)use the safety belt? A) 0.2 C) 0.4 D 0.5 P as 14. What is the probability that a 0(’: Eu It? A) 0.5 B) 0.7 C) 0.8 H A B l 15° What is the Probafility giver/that he A) 0.6 B) 0.3 o. D) 0.5 Ptfifm ax: 16. The complement of guessing 4 correct answers on a 4-question true/false exam is A) guessing 4 incorrect answers B) guessing at least 1 incorrect answer C) guessing at least I correct answer D) guessing no incorrect answers EEMCM’WQQ?) 9 imémrrec’i‘g ; f a Corrfim‘i aaa$ $ imco i | I I i I I I i i i I I I i I I I I I I i I I i i i i i I 17. When 2 dice (6—sided each) are rolled , find the probabili W “getting a . of WW9 5?? A) 0.25 B) 0.72 C) 0.17 V a 18. probability uses a to compute probabilities. A) Classical _Empir ubjective D) continuous M EJQE gag Q m a is irii a E e M E m K M ?% “W 3? i% m 5 g 19. When objects are arranged in a specific order , the arrangement is called _ A) a combination B) with replacement C) without replacement a permutatio ass? 20. A student and a professor each choose a number between 1 and 5 (l and 5 are both possible choices). What is the probability that the two choose the sodd nr? 3) 0-08 FFG$Q§SQF 21. There are 3 different mathematics courses, 2 different student must take one of each, hdifferent ways can this be done? m1 m3 Knew science courses, and one history course. If a M 22. There are 2 mflgstudents ancE‘SEtgstudents in a class. can a group of 3 students be selected if there must be at leas‘f one math-student on this group? A) 5 B) 10 C) 20 at um um Wm & wt LEE :3: {Ewafia attes£ 2m stamiw ’ l 9 l v 2 23. Two events are if they cannot occur at the same time. A) not mutually exclusive (3) dependent events B) independent events D) mutually exclusive Mijm 25. Consider the experiment of selecting at random fiom a box containing an equal number of defective (D) and non-defective(N) items. The sample space for this experiment is A) 2 B) S={D,N} C) 4 D) S={DD,DN,ND,NN} 26. What type of probability uses sample spaces to determine the numerical probability that an event occurs? A) Empirical probability (1) Subjective probability B) Classical probability D) Conditional probability gasses sawpia s paces ii) déifiifiwimfi wwwfit’iflai ?V€9%§§iiim ‘ 28. A newspaper advertises 5 different movies, 3 plays, and 2 baseball games for the weekend. If a couple selec find the probability that they attend 2 plays and 1 movie. A 0.20 '" 021 C 0.083 D 0.125 ‘ W 29. How many different can be formed from the letters in the word orange? A) 360 B) 840 C) 120 D) 420 WLWAG WC” 4 N Aw 30. The correlation coefficient between the ’ ‘ ‘ may be A) close to —1 B) close toZ D) O : 32.. How many different tests can be questions? A) 240 g @«$ fig mmwgw fl € mm W“ @uwé 33. If the letters A,B,C,D,E, and F are to be used difi‘erent codes are possible if i i 7 7 V ‘ A) 720 Q) 46656 “We MMWEQE‘” a? C€3£95 3: gxgxg’XEKQ/VE 34. Two events are said to be if the probability of one event occurring is of the other event. A) not mutually exclusive B) independent C) dependent D) mutually exclusive 36. The complement of guessing at least 5 correct answers on a 6 A) guessing 6 incorrect answers B) guessng at least 2 incorrect answer -question true/false exam is C) guessing at least 2 correct answer D) guessing 6 correct answers firmer? g “as-w 3% gear?“ g earnest «MA...» «I. «nah-mm «m a {gr/l is EirkedéwgaxfiffiafirgEX} ,5 W- W w Wm..- WWW m W { M u z .. 'Mw—mww—«mm l a! effing t My 37. If the 26 alphabetic letters and the numbers from 0 to 9 is to be used to form a car plate that consiSts of 3 letters and 4 numbers, how many different plates are possible if repetitions are permitted? A) 611531 B) 447174 C) 786240 D) 175760000 me&@t’ 3% wéfig m @263 Maggie 39. A child gets 22 heads out of 30 tosses of a coin. This would be an example of type of probability. ' ' _~ B) subjective C) classical D) empirical and classical :3 a El Wall»; @1396 amé' W Pb “ MWflINZZTQW 5w @fléfi Mg“ Al’g’ifi’g%i g I g I I I I I I I l I I g l g I I I I |_ I | I I I I g I I | g I | | I I I I I I I g I I I I I I I I I I I I I | | | | I I I I I | ...
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This note was uploaded on 06/06/2011 for the course MATH 1201 taught by Professor Asl during the Spring '08 term at UCLA.

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stat 120 - gig @gigw gum: $91M draw} 3 £ m 31.5,. mgr...

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