1) the company has a new program where they promise to customers to delivery of an item within 24 hours from receiving their orders. Delivery time data has shown that the actual delivery time has shown to be about 20 hours. is the company doing a good job?

a. yes

b. no

c. yes, and the guaranteed time can be reduced

d. cannot tell, we need more information

2) most effective way to manage the pull system is

a. to control the demand

b. to control the work in the process

c. to control the throughput rate

d. to add push capability to offset pulling

3) In the push system, the work is released into the system

a. without regard to system status

b. with regard to system status

c. at a constant rate

d. on a scheduled basis

4) the probability of event a is 50%. the probability of event b is 10%. what is the probability of either event occurring?

a. 5% b. 55% c. 60% d. 40%

5) the system has 2 parallel process, one has an availability of 60% and the other one has an availability of 30%. What is the failure probability of this system?

a. 18%%

b. 28%

c. 72%

d. 82%