1-Which of the following represents customer requirement from a process?
a- sample size in control charts
b- usl and lsl
c- process standard deviation
d- ucl and lcl
2- the specification limits for coffee temperature are USL=185 and LSL= 175. the coffee making process results in coffee with varying temperature, the mean being 180 and standard deviation 5. Suppose the standard deviation increases to 10. Which of the following will NOT happen?
a- more observations will be out of control limits
b- USL and LSL will become wider
c- Process capability (Cp) will reduce
d- more defects will be generated
3- A company follows statisticial process control (SPC) to monitor its process and use 3 sigma control limits. if the company increases the sample size, which of the following will happen?
a- the control limits will become narrower
b- the control limits will become wider
c- the process will generate more defects
d- the process will generate less defects
4- The interarrival time of customers is 2 minutes. The processing time is 5 minutes. What is the minimum number of servers needed to ensure that the process is stable?
a- 1
b- 3
c- 4
d- 2
5- Which of the following does NOT reduce average waiting time?
a- E-ZPass at toll booth
b- Appointmnets at Doctor's office
c- Reducing variety at McDonald's
d- Putting magazines in patient waiting room