Suppose That and R Charts Are Based on Subgroups

question 122

Multiple Choice

Suppose that and R charts are based on subgroups of size four are being used to monitor the tire diameter size of a new radial tire manufactured by a tire company.The and R charts are found to be in statistical control with inches.A histogram of the tire diameter measurements indicates that distribution of these measurements is approximately normally distributed. Calculate the estimate of the percentage of tires that are out of specification.

• A)1.93%
• B)2.68%
• C)1.62%
• D)17.36%

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Definitions:

Edward Bellamy

A 19th-century American author known for his utopian novel, "Looking Backward", which envisions a future society based on cooperative living and economic equality.

Haymarket Affair

A significant event in labor history occurring in Chicago in 1886, involving a bombing at a labor protest and its aftermath, which affected the labor movement and public opinion on labor rights.

Knights of Labor

A significant labor organization in the late 19th century United States, which aimed to promote worker's rights and social reforms.

Decline

A gradual decrease in quality, quantity, or importance of something over time.