Ball-Bearings, Inc

question 105

Multiple Choice

Ball-Bearings, Inc. produces ball bearings automatically on a Kronar BBX machine. For one of the ball bearings, the mean diameter is set at 20.00 mm (millimeters) . The standard deviation of the production over a long period of time was computed to be 0.150 mm. What percent of the ball bearings will have diameters 20.27 mm or more?

• A) 41.00%
• B) 12.62%
• C) 3.59%
• D) 85.00%

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Definitions:

Spongy Bone

A type of bone tissue characterized by a porous, honeycomb structure, found at the ends of long bones and in the inner layers of other bones.

Articular Cartilage

A kind of slick, pale material that envelops the extremities of bones at points where they converge to create joints.

Epiphyseal Plate

A growth plate located at the ends of long bones where new bone tissue is produced during childhood and adolescence.

Zone of Resting Cartilage

A region in the epiphyseal plate of growing bones where chondrocytes are not actively proliferating but can be recruited for growth.