iIIE'ICI Emrlm I I mums DI 'I'EI'IBHEB TABLE AM511.2 Update Times. [in seconds), Based on Messaging System and Media Used IHTEIFIBE MEIR. System] System Systen Cable 4.56 4.1? 3.53 4.90 4.23 3.1"! 4.] B 4.00 -'-1-.1[II 3.56 3.96 2.3? 4.34- 3150 3.18 Fiber 4.4] 3.?9 4.33 4.03 4.11 4.00 4.69 3.53 4.31 5.18 4.53 3 915 4.9.5 4.02 3.32 EXERCISE 2. Cmpletely analyze these data and unit: a report to the team that indicates ue impenanee efeaeh of the IW fan- ten: audit-r the interaction between them on the length of the call. [nelmle reeemtmedetiem for future experimmta to perform. F'hase 1 The computer operations department had a business objec- tive ot'redueing the amount oftime to fully update each sub- scriber's set ofntessages in a special secured e-mail system. An experiment was conducted in which 24 subscribers were selected and three different messaging systems were used. Eight subscribers were assigned to each system, and the up- date times were measured. The results (stored in are presented in Table AMSI l. 1. TABLE AMS'I'l .1 Update Times for Three Different Systems System! System! System 33.3 41.3 32.9 42.1 36.4 36.1 45.2 39.1 39.2 34.8 28.? 29.3 43.3 36.4 41.9 37.3 36.1 31.1?I 41.1 35.3 35.2 43.6 33."!I 33.1 EXERCISE 1. Analyze the data in Table Ahu'ISl 1.1 and write a report to the computer operations department that indicates your findings. Include an appendix in which you discuss the reason you selected a particular statistical test to compare the three e-mai] interfaces. DID NOT CONTINUE UNTIL THE PHASE 1 EXERCISE HAS BEEN COMPLETED. Phase 2 After analyzing the data in Table AMS] 1.], the computer operations department team decided to also study the effect of the connectimt media used [cable or fiber}. The team designed a study in which a total 01'30 sub- scribers were chosen. The subscribers were randome as- signed to one of the three messaging systems so that there were ve subscribers in each of the six combinations of the two factorsmessaging system and media used. Measure- ments were taken on the updated time. Table AMSI 1.2 surn- marizes the results (stored in . analyz