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 (for example only) A woodworker is concerned about the quality of the finished appearance of her work. She 

has finished a total of 50 unit split-willow hand-woven baskets. However, she has found the 

following number of finish defects in ten units sampled: 4, 0, 3, 1, 2, 0, 1, 2, 0, 2.

a. Calculate the average number of defects per basket

b. If 3-sigma control limits are used, calculate the lower control limit and upper control 


Step-by-step answer

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