An experiment with two factors, in which all levels of one variable are run at each level of the second variable, is called a

According to Tchebysheff's theorem what % of measurements must lie within 2.5 standard deviations of the mean?

A product failure in the customer's hands is bad for the company. Why do only 4% of the customers normally file a complaint?

An X-bar and R chart with n=5 has been plotted for some time and has demonstrated random variation.
Upon review of the last 30 plot points, the expected number of runs around the centerline on the X-bar chart is expected to be approximately which of the following?

Which of the following would be the MOST important considerations when establishing inspection points within a production operation?
. Inspection to prevent defects from entering the system.
. Inspection after all operations (both manual and automated).
. Inspection prior to a painting or masking operation.