Table 16-1
-Refer to Table 16-1. Bags of chocolate candy are sampled to ensure proper weight. The overall average for the samples is 36 ounces. Each sample contains twelve bags. The average range is 1.3 ounces. The upper control chart limit for the sample averages would be
A) 36.3458.
B) 35.6542.
C) 38.3101.
D) 36.6279.
E) 37.1258.

Question

Table 16-1 
-Refer to Table 16-1. Bags of chocolate candy are sampled to ensure proper weight. The overall average for the samples is 36 ounces. Each sample contains twelve bags. The average range is 1.3 ounces. The upper control chart limit for the sample averages would be
A) 36.3458. 
B) 35.6542. 
C) 38.3101. 
D) 36.6279. 
E) 37.1258.

Quizplus · Accepted Answer

The upper control limit (UCL) for the sample averages is calculated using the formula: UCL = X̄ + A2 * R̄, where X̄ is the overall average, R̄ is the average range, and A2 is a constant that depends on the sample size (n=12). For n=12, A2 is approximately 0.27. Thus, UCL = 36 + 0.27 * 1.3 = 36.3458.

Table 16-1 -Refer to Table 16-1. Bags of Chocolate Candy Are Sampled