Quiz 3

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Question 2 Use data from question 1. What is UCL? Group of answer choices 6.97 6.65 6.89 8.01

6.65

Question 4 Use data from question 3. What is UCL for average chart? Group of answer choices 99.66 97.95 98.64 99.38

99.38

Question 1 A bank randomly reviews loan applications and checks them for errors. This data (Download) belongs to ten applications reviewed and the number of errors found. Construct a control chart and determine if the process is in control. Group of answer choices Process is in control Process is not in control. At least one observation is beyond UCL Process is not in control. At least one observation is beyond LCL Process is not in control. There are observations beyond both UCL and LCL

Process is in control

Question 3 Tensile strength of a new product is tested by taking 5 unit samples. This table (Download) contains data from five samples. Strength of all units in each sample recorded in the same column. Develop control charts for the data, subgroup by Sample. Is the process in control? Group of answer choices Process is in control Process is not in control. At least one observation is beyond UCL for average chart. Process is not in control. At least one observation is beyond LCL for average chart. Process is not in control. At least one observation is beyond UCL for range chart.

Process is not in control. At least one observation is beyond UCL for average chart.

Question 6 Use data from question 5. Which one of the following samples has the least variation? Group of answer choices Sample 1 Sample 2 Sample 3 Sample 4 Sample 5

Sample 3

Question 5 Quality control process at a national call center samples customer call records daily. After reviewing the help offered by operator, the call is rated as "acceptable" or "not acceptable". 400 samples were taken weekly. Samples from the past 15 weeks are in this file. Download this file. Which answer is correct about this file? Group of answer choices The process is in control The process is not in control. There is at least one observation below the lower control limit. The process is not in control. There is at least one observation higher than the upper control limit. The average of this process is 0.05

The process is not in control. There is at least one observation higher than the upper control limit.


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