Question

A woodworker is concerned about the quality of the finished appearance of her work. In sampling units of a split-willow hand-woven basket, 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 limit.

Answer

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