ASQ Six Sigma Black Belt CSSBB Exam Practice Test

At a particular time, three components are in parallel and each has a reliability of 0.98. What is the reliability of the system?

Aprocess shows the following number of defects. Each sample size for this process is 85. 3 8 2 7 7 6 8 8 9 5 What control chart should be used?

A set of data from a process has 8 readings per sample and 50 samples. The mean of the 50 sample means is 12.62. The mean of the 50 ranges is 0.18.A customer requires that SPC charts be done on their forms which have spaces for only 5 readings per sample. What should be the UCL and LCL for tbe new averages chart?

A team wants a technique for determining and displaying priorities based on frequency of various defect types. They should use:

A frequent cause of system suboptimization is:

The mean, median and mode of a distribution have the same value. What can be said about the distribution:

= 0.05

A machine tool vender wants to sell an injection molding machine. The current machine produces 3.2% defectives. A sample of 1100 from the vender 's machine has 2.9% defective. Do these numbers indicate that the proposed machine has a lower rate of defectives?