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ts MANA 5 x Exam 2 \"the A shirt manufacturer buys cloth by the 100 yard roll fr

ID: 378658 • Letter: T

Question

ts MANA 5 x Exam 2 "the A shirt manufacturer buys cloth by the 100 yard roll from a supplier. For setting up a control chart to manage the irregularities (eg. loose threads and tears) the following data was collected from a sample provided by the supplier SAMPLE IRREGULARITIES 1 2 3 4 567 8910 2 6 4 8 6 6 82 5 5 a. Determine the t. Sp. UCL and LCL for a c-chart with z -2. (Leave no cells blank - be certain to enter "O" wherever required. Round your answers to 2 decimal places.) UCL LCL b. Suppose the next five rolis from the supplier had three.tvo, five, five, and five iregularities Is the supplier process under controi? No

Explanation / Answer

a. Sum of irregularities =52

Average no. of defect= 52/10=5.2

So

=5.2

Sp= =5.2=2.28

UCL=+z( )= 5.2+4.56=9.75

LCL=-z( )= 5.2-4.56=0.64

b. The process is in a state of statistical control.