Inde-3270 Product Quality And Reliability Tutorial Assignment 5

This study source was downloaded by 100000901954967 from CourseHero.com on 01-07-2026 22:21:58 GMT -06:00https://www.coursehero.com/file/250914363/Tutorial5-June25-Solutionpdf/ NAME:____________________ SID:____________________ INDE-3270 Product Quality and Reliability Tutorial Assignment #5 Due: 4:30PM, June 25, 2025 (submission through BrightSpace only, no e-mail submission) QUESTION 1: (3 pts) A lot of size 3000 is submitted to the MIL-STD-105E single sampling plan for sampling acceptance. Assume inspection level is specified at General II and AQL is set at 1.0%, answer the following questions. (a) Find the associated Normal plan, Tightened plan and Reduced plan (b) Find the probability of accepting a lot under the normal plan, when the process quality p=1.2%. (c) Lastly, what is the probability of switching from Normal plan to Tightened plan when the process quality p=1.2%. Inspection Level G-II, Lot size 3000, -- Code Letter K AQL= 1.0% From the MIL-STD-105E(ASQ Z1.4), we get Normal Plan : n=125, Ac=3, Re=4 Tightened Plan : n=125, Ac=2, Re=3 Reduced Plan : n=50, Ac=1, Re=4 Prob. of Acceptance (Normal Plan, p=1.2%) = 0.934 (based on np=0.012*125=1.5, c=3) Prob(switching from Normal to Tightened) = Prob(at least 2 out of 5 consecutive lots rejected under normal plan) =1-Prob(all 5 consecutive lots accepted)-Prob(1 out of 5 consecutive lots rejected) =1-(0.934)5 -15(1)1()4=1(0711)5(10.934)1(0.934)4=