A Woodworker Is Concerned About the Quality of the Finished

question 147

Essay

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, centerline, and upper control limit.

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Definitions:

Urethra

A tube that connects the urinary bladder to the urinary orifice for the removal of fluids from the body.

Bladder

An organ that stores urine produced by the kidneys before it is excreted from the body.

Uric Acid

Nitrogen-containing waste compound derived from ammonia; it can be excreted as crystals.

Ammonia

A colorless gas with a pungent smell, consisting of nitrogen and hydrogen (NH3), used in various industrial processes.