Quiz Answers: Statistical Inference and Hypothesis Testing - Chapter 10, Quizzes of Business Management and Analysis

Download Quiz Answers: Statistical Inference and Hypothesis Testing - Chapter 10 and more Quizzes Business Management and Analysis in PDF only on Docsity! 1/ Answers to 3 decimal places In each problem below, /.r\ Print name show me your'hypotheses,'decrsion rule, 'observed value of C' the test statistic, and conclusron both statistically, and "in Engltsh " " MAS 202Practice Quiz - Chapter 10 1. The University of Miami Wellness Centerotfers a weight reduction program for Seniors. (Old people, not Client 1 2 ^3 ,9 Pka'lPttr 4 fl,:lozO'" 5 o -Ll,< 5 = L-lL7 ' q,(obl150170 210 148 190 160 144 166 195 152 180 154 -L9 sq +{ -(p so'[' t ro;r 32d = l.\-7 L , toss.t \ & tr:t\:2i n. zcro-tdjnr$&*-rr.w,V@N-J-- ,'i'l*'"-'n-' I,,.,,?,7 \ Ht" lf,o*o',ffig e-no'a4h iu=')d'*'-- 4, r t ?.b,r ( #*)'.' .' -" rrf#$D.f*ft ti ;Tff ;'::T'; - t,.y 1 A ,<t4 -n''s // .\o e,.,d p(avc *wa.* {h,r, Tro3ca*u vo'ti'JcJ Gqn4,*,60 o e a1''4;3.o+' ;YPury+ *' - t (e'1ec* lfo ,+ O i9 no+ 'rr1 *lw i'ft+dflfrL' v b. Whet is the p-value above? _ 2-_ ,o€- ,r :"t" $o it P< '\ r!- o - -*r;,, -,)* ,b'11 d*. - 2 fl-, )* tgfe\eo+ +r". n^"w *-'EG t 44+6'\ (v ' - ' .(&' t -T=.ot 2. Pu5lix Markets, Inc. is redesigning the checkout lanes in its stores throughout the southeast U.S. Two a. Using o = .10, test to determine whether the introductory prolEfiprovided a statisticdlly significant weight designs have been suggested. Tests on customer checkout times have been conducted at two stores where the new systems have been installed. A summary of the sample data follow: l,- SystemA SystemB .n/.Vtn,=12O n,=100 J"rtfi=a--r"rin i,=i.i*in t v V^,/ \=2.2min sz=1.5min "} )'"V{ { A- a.Testatthe.01leve|ofsignificancetodeterminewhetherSystemBisfasterthanSystemA.< | ! .. ,l,r I \) JrErrr rr rr rcr'Ler e-'' /-0 --lTest a the .01 level of sign ficanc to determi wh is fast th Sy . t --,t \ ) *^,J),-il-"ab T c. '/ |) '-(',,Jttwt ,-r -,/ 4,Lt t.<z J t u l. - t fr.q,L\+ffi(,6- qf {t^,o ;1i"+'" ; -i+ fftfii - ;;i"?;;*'*"';1%;{5'ffi"'J'iln',4'-.in+cgv4\ . \. ,^ ) ;:3;; A. ).,. . ) n'-J +t- in+c va\ a '' -r o .5.b. Whbt wogrld the p-value be above? ffi