Basad ona caranl work stuty I tha Hostettar Corp, ert shoun in the hol owing tab

Question

Basad ona caranl work stuty I tha Hostettar Corp, ert shoun in the hol owing table has haachaed ervation (minutes Element sre caily reports Photocopy reua Label and package raports 5% 40 41 90 Photocopying machinc bro Included s delay Inthe alawancc factor Thc lowance tsctor for this type of wom i: gwen to b c 15% (Round oV ntomcdote catuatens to two dcer:Ji p3ccs bcrore crocecatg with futher calculators, aThc nomal tic for the preparc daly repart peratin-43. minuts fround yourrnse o two dcma'placoc. The norm time for the' photocopy results' ooron _ 1 3 475 minutes iuwd your response tu two decmai aecegl Thc norm time for the . dlatrioute reports-oparaticn _ 14 minutosund your mecanec to Mode ma' cocos The norm time for th" oven! process-74.415 mirune round nur reupwve 5c wo deamevaloee). h) Th wanda 1TIA far th ren1AAA-RT 54 min.taa rauriyynur faror.ia na.iaame, alocaj c' The number at o sena ons that are roqtred to a 9 s contdece k witin s accuracy found your ocoense to e mmed n her wro e mbar chex Arew 1204PM

Explanation / Answer

For 95% confidence level with 5% accuracy,  Z value is 1.96, Probability of having in normal time=74.415/87.54=1- 0.85=0.15. If we divide it with 10, 0.015

1.962=3.8416

3.8416*0.015=0.05762

0.052=0.0025

Required observation= 0.05762/0.0025=23

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