Table 15-1
-Refer to Table 15-1.To guarantee that cans of soda are properly filled,some cans are sampled and the amounts measured.The overall average for the samples is 12 ounces.Each sample contains 10 cans.The average range is 0.4 ounces.The lower control chart limit for the sample averages would be
A)12.1232.
B)11.8768.
C)13.2.
D)12.308.
E)None of the above

Question

Table 15-1 
-Refer to Table 15-1.To guarantee that cans of soda are properly filled,some cans are sampled and the amounts measured.The overall average for the samples is 12 ounces.Each sample contains 10 cans.The average range is 0.4 ounces.The lower control chart limit for the sample averages would be
A)12.1232. 
B)11.8768. 
C)13.2. 
D)12.308. 
E)None of the above

Quizplus · Accepted Answer

The lower control limit (LCL) for the sample averages is calculated using the formula: LCL = X̄ - A2 * R̄, where X̄ is the overall average, A2 is a constant based on sample size (for n=10, A2=0.308), and R̄ is the average range. Thus, LCL = 12 - (0.308 * 0.4) = 11.8768.

Table 15-1 -Refer to Table 15-1.To Guarantee That Cans of Soda Are