Assignable variations may be due to

Select one:

a. Variations in raw material

b. Limitations of the process

c. All of the above

d. Limitations in the skills of the operator

The chart used to monitor attributes is

Select one:

a. All of the above

b. Range chart

c. Mean chart

d. p-chart

What does Specification Limits mean?

Select one:

a. The limits specified by customer.

b. Middle or average values of the range for process acceptable variables.

c. Maximum and minimum values of the acceptable range of variables.

d. The average values of actually measured variables.

Process capability

Select one:

a. Exits when Cpk is less than 1.0.

b. exists when the process is perfectly centered.

c. cannot be measured.

d. means that the natural variation of the process must be small enough to product products that meet the standard.

The object of a statistical process control (SPC) system is to

Select one:

a. Provide a signal when assignable variations are present.

b. Assess the customer expectations

c. Eliminate natural variation.

d. Provide a signal when natural variations are present.

Twenty samples of size 5 are taken from a stable process. The average means of the sample means is 42.5, and the average range of the sample is 1.5. What is the UCL for the x-bar chart?

Select one:

a. 47

b. 43.37

c. 42.5

d. 3.17

Twenty samples of size 5 are taken from a stable process. The average means of the sample means is 42.5, and the average range of the sample is 1.5. What is the UCL for the R-chart?

Select one:

a. 0

b. 43.37

c. 3.17

d. 1.5

For the last 30 days, the number of mistakes on the daily report has averaged 4.5. What would the UCL be if a 3-sigma c-chart was constructed?

Select one:

a. 10.86

b. 2.12

c. 7.5

d. 18

A bottling company runs a filling process that should fill bottles with 12 plus or minus 0.04 ounces. A capability study reveals that the process mean is 12 ounces and the standard deviation is 0.01 ounces. What is the capability of the bottling process?

Select one:

a. 1.5

b. 0.67

c. 0.75

d. 1.33

If average demand for an item is 21 units per day, safety stock is 4 units, and lead time is 2 days, the reorder point (ROP) will be:

Select one:

a. 42

b. None of these

c. 84

d. 46

Which product is usually bought on a reorder point (ROP) basis?

Select one:

a. wedding gifts

b. textbooks

c. sugar

d. newspaper

If EOQ = 360 units, order costs are $5 per order, and carrying costs are $0.20 per unit, what is the usage in units?

Select one:

a. 2592

b. 129600

c. 25920

d. 18720

Which of the following relationships hold true for safety stock?

Select one:

a. the higher the profit margin per unit, the higher the safety stock necessary.

b. the greater the uncertainty associated with forecasted demand, the smaller the safety stock.

c. the greater the risk of running out of stock, the smaller the safety of stock.

d. the larger the opportunity cost of the funds invested in inventory, the larger the safety stock.

Which of the following items would be most likely to have dependent demand?

Select one:

a. Electric starters

b. Flowers

c. Toy trains

d. Cookies