The Width of a Bronze Bar Is Intended to Be

question 66

Essay

The width of a bronze bar is intended to be 0.3 cms. Inspection samples contain five bars each. The average range of these samples is 0.01 cms. What are the upper and lower control limits for the x-bar and R-chart for this process, using 3-sigma limits?

---

Definitions:

Parasites

Organisms that live on or within another organism (the host), from which they obtain nutrients at the host's expense.

Relative Frequency

The proportion of times a particular value occurs in relation to the total number of observations.

Distribution

The arrangement, frequency, or spread of something across a particular area or among a specified group.

Average

A statistic specifying the sum of the values that the items in a class have on a quantitative variable P, divided by the number of items.