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Ch 11 review key p3 - 8 Referring to the information above...

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Unformatted text preview: 8 Referring to the information above, suppose we wished to determine if there tended to . be a difference in height for the seedlings treated with the different herbicides. To answer this question, we decide to test the hypotheses Ho: fiz—fl) =0,Hg:,uz—p1¢0 Based on our data, the value of the two-sample r is A) 14.60. 0&180 t; H00 ——0 : 5H3 3.43:- /_____—_— D) 2.54. 1,] 25' 9. Pat wants to compare the cost of one and two-bedroom apartments in the area of her college campus. She collects data for a random sample of to advertisements of each type. Here are the rents (in dollars per month): Two-bedroom: 595 500 580 650 675 675 750 500 495 670 One-bedroom: 500 650 600 505 450 550 515 495 650 395 a) Pat wonders if two-bedroom apartments rent for significantly more than one-bedroom apartments. Perform a significance test to answer her question. 13+”! '2'. MW M+PJIW+LI 9" 1-5,!ij fiqu'W-f} "a h‘r ‘v‘gg . fl-z: mew M‘}p¢/W’LO? Z’bfl’mh afar-dunk Nth-f n;¢a_ {W0 Sd'mPf-e +_J-gbf‘ PM:- POfuI'a‘Hh MCM airtime“. (QbflIVODh-n— {Wrm> ____..-—-- Ramfiam 51':qu F'b stir-v"! assay-c {+12 4n 53". 45“” 55M?!“ qr; ghfi'g‘qfiht my} ”I’d/:5 5371: 05¢ i "’30 um». «pr-hurl Rabi? are my" BM} 5 be (ennui-l. wk: are. NH- "*3! I check Cur Hanna/:15 Scarf/015; 2Mm... FEU'fl .__ 1 buff“ {ft/{1w :0 ) {59m (mtg) HUG—4 I (Nam but! “be“ $99: ‘7-5"? bah a” Gay!) 53mm: in}. Lu/ 1.2122“ 7° (,2- __ M ' we was. __ .— ..- _ "' XI - 2 "14¢ %_ (90‘?) 31.. was '1‘“? f— 3 ) > 2 (aces y} -—o 2 __ _ c. T: . 0 x.= 53’» 2:31? ”5"" ‘37-’33 PMs 4‘2 " Io "‘ Va .. b) Find a 95% confidence interval for the additional cost of a second bedroom. Interpret your c1‘riterva in o " context of this problem. '02? gyms: 444— P'er/“c (:2 dwafl 432‘? we (and ye‘ed- 7' r 1 J 4* Hp 07" Sishl'g'i'CCnc-c level 042-0!- dtmfl mafl..& “Hm/)1 TL. man page. 0; ,2, 12¢!er apwma a sane-M5 fist-w mm and; {chWv repute/W": a 69‘,“ 1;, (“Aimee-NZ. Fm“, C's/c ( we. km 615%. (WWW ”Wt ”En?“ 4‘5“” "‘ ”“5 mt :4- two bdrm». w, lqum opMM+5r_ 2-4) r3 bah-e... 92mm, 64‘ I959) drum}; ...
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