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Exam 2 (4)

# Exam 2 (4) - disjoint but not indepen ent"...

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Unformatted text preview: disjoint but not indepen ent. ' " ) complementary. 9 independent but not disjoint. D) both disjoint and independent. E) neither disjoint nor independent. 9 (74.10414 =31.) Usea table of areas to ﬁnd the speciﬁed area under the standard normal curvef.3 C1“? ﬂ' 5‘05 9(235'4 ‘l '57 *7) ‘ area that lies between -1.10 and -0.36 35544 " . lag” h B) 0.2239 C) —0.2237 D) 0.4951 E) 0.7%3 4-; %’ Use a tableﬂoi areas for the standard normal curve to find the required z-score. 8) Find the z—score fOr which the area under the standard normal curve to its left 15 0.04 A)- -1.63 B)- -1.89 (3)1.75 D) -1.48 (n or: .or 3:90 Mt . Find the Indicated probability. '1 Rf“ 1’0 9) If two balanced die are rolled the possible outcomes can be re rese geared as follows. a: (1.1) 2 1)®41)(5 1)(6, 1) PCA)*‘PCS) “PC/ems) (L2) (3 2) (4. 2) (5 2) (6 2) j; a, +_ _r_, 'Btr <C2h2moansoeauaa . it so ' 0 W0 MP5 (1. 4) (2. 4) (3: 4) (4. 4) (5. 4) (6; 4) 3L9 aseoeoessamo (1. 6) <2. 6) (a. a) (4. 6) (5. his}; Determine the probability that the sum of the di is 431: 12. 5 1 = . 1 7 “3—6 B): d ”is E) 3:. “9.3% dun ml .OM .ICM. 10) At a Califomia college, 22% of students speak Spanish, 5% speak French, and 3% speak both F8) ‘3 . 22- languages. What is the probability that a student chosen at random from the college speaks Spanish - but not French? at: ’6; :3 , (3 A) 0.81 B) 0.24 C) 0.02 o) 0.17 m uh J ‘1 / lie l 11) A group of volunteers for a clinical trial consists of_83 women and 78 men. 21 of the women ancLZD of the men have high blood pressure. If one of the volunteers' is selected at random find the probability that the person w -' - - - . - '5 u - o u .- 1' sure. A)0512 B)0.255 ' M “M , ' Y P(Ml “:7 ﬂy} ' 71 10:)“ Find the indicated probabil ty 0 he normal d1sti-1buted variable. I 12) The volumes of soda 1n quart soda bottles are normally distributed with a-mean of 32.3 oz and a M ‘ 323 standard deviation of 1.2 oz. What is the probability that the volume of soda in a randomly selected 7—- : ) 2_ bottle will be less than 32 oz? 32A) ).0 .8236 B) 03821 C) 0.0987 WVéaz) _fiL____wg Find the probability of the given event. 13) A single fair die' 15 rolled. The number on the die is a 3 or a 5. €95 m% 0? mi 02 ode?” PM) +PCFQ- PC/i MW 6) A-2 JG l’ ’tr‘xtl \ NE? \?&0%06b ' ‘ \. E) 0.124 E) 0.5937 9_£L_ 7) 81f; ”L— ...
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