TABLE 17-3
A quality control analyst for a light bulb manufacturer is concerned that the time it takes to produce a batch of light bulbs is too erratic.Accordingly,the analyst randomly surveys 10 production periods each day for 14 days and records the sample mean and range for each day.

-Referring to Table 17-3,suppose the analyst constructs an chart to see if the production process is in-control.What is the upper control limit (UCL)for this chart?
A)62.15
B)60.95
C)59.85
D)58.75

Question

TABLE 17-3
A quality control analyst for a light bulb manufacturer is concerned that the time it takes to produce a batch of light bulbs is too erratic.Accordingly,the analyst randomly surveys 10 production periods each day for 14 days and records the sample mean and range for each day.
 
-Referring to Table 17-3,suppose the analyst constructs an  chart to see if the production process is in-control.What is the upper control limit (UCL)for this chart?
A)62.15 
B)60.95 
C)59.85 
D)58.75

Quizplus · Accepted Answer

The Answer of TABLE 17-3
A quality control analyst for a light bulb manufacturer is concerned that the time it takes to produce a batch of light bulbs is too erratic.Accordingly,the analyst randomly surveys 10 production periods each day for 14 days and records the sample mean and range for each day.
 
-Referring to Table 17-3,suppose the analyst constructs an  chart to see if the production process is in-control.What is the upper control limit (UCL)for this chart?
A)62.15 
B)60.95 
C)59.85 
D)58.75

TABLE 17-3 A Quality Control Analyst for a Light Bulb Manufacturer Is