When trying to find all possible causes of a problem, which of the following tools would be useful?
. Systematic troubleshooting and brainstorming.
. Fishbone diagrams and histograms.
. Checklists and scatter diagrams.
. Control charts and graphs.

A box contains 27 black and 3 red balls. A random sample of 5 balls is drawn without replacement. What is the probability that the sample contains one red ball?

Analysis of data on all product returns is important because
I. Failure rates change with length of product usage.
II. Changes in design and in customer use are often well reflected.
III. Immediate feedback and analysis of product performance becomes available.

An operation requires shipments from your vendor of small lots of fixed size. The attribute sampling plan used for receiving inspection should have its OC curve developed using

Which of the following nondestructive testing methods can be used to evaluate sub-surface discontinuities in aluminum bar stock?
I. Microwave.
II. Magnetic particle.
III. Pulse echo.
IV. Eddy current.