Table $7.4$ The Manager of Kewpie Has Recently Implemented an Attribute- Based

Multiple Choice

Table $7.4$
The manager of Kewpie has recently implemented an attribute- based process control method. The accompanying table shows the results of five different samples of dolls from the five weeks of production after the process control method was implemented.


-Use the information in Table 7.4. The manager of Kewpie has decided to redesign the process control method (both central line and control limits) based on just the data from weeks 1- 5. What is the new UCL? (Assume z = 2)

A) less than or equal to 0.15
B) greater than 0.15 but less than or equal to 0.19
C) greater than 0.19 but less than or equal to 0.23
D) greater than 0.23