Table 5.11 Factors for Calculating Three-Sigma Limits for the Chart and Chart

Multiple Choice

Table 5.11
Factors for Calculating Three-Sigma Limits for the Chart and R-Chart
Source: 1950 ASTM Manual on Quality Control of Materials,copyright American Society for Testing Materials.Reprinted with permission.
-Thermostats are subjected to rigorous testing before they are shipped to air conditioning technicians around the world.Results from the last five samples are shown in the table.Calculate control limits for a chart that will monitor process consistency.The correct control limits as (LCL,UCL) are:

A) (-5.37,5.37)
B) (0.00,5.37)
C) (0.00,6.03)
D) (0.00,6.12)