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.Which expression best describes this chart?
A)In-control
B)Increasing trend
C)Decreasing trend
D)Individual outliers

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.Which expression best describes this chart?
A)In-control 
B)Increasing trend 
C)Decreasing trend 
D)Individual outliers

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.Which expression best describes this chart?
A)In-control 
B)Increasing trend 
C)Decreasing trend 
D)Individual outliers

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