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05-11-2020
Business

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A manager wishes to build a 3-sigma range chart for a process. The sample size is five, the mean of sample means is 16.01, and the average range is 5.3. What are the UCL and LCL, respectively, for this range chart?

a. 33.9 and 11.2
b. 6.3 and 0
c. 11.2 and 0
d. 33.9 and 0

Respuesta :

andromache andromache

09-11-2020

Answer:

c. 11.2 and 0

Explanation:

The computation of the upper control limit and the lower control limit is shown below:

Average Range = R = 5.3

Now

The Upper control Limit is

= D4 × R

= 2.115 × 5.3

= 11.2095

And,

The Lower control limit is

= D3 × R

= 0 × 5.3

= 0

Hence, the correct answer is Option C i.e. 11.2 and 0

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