Repeated sampling of a certain process shows the average of all sample ranges to be 1.0 cm. The sample size has been constant at n = 5. What are the 3-sigma control limits for this R-chart?

The U.S. Constitution is a federal system in which governmental powers are divided between a national government and 50 state governments.

a. true b. false

The least-square regression analysis method uses only two data points

Indicate whether the statement is true or false