TABLE 8-3 A Quality Control Engineer Is Interested in the Mean Length

question 70

Short Answer

TABLE 8-3
A quality control engineer is interested in the mean length of sheet insulation being cut automatically by machine. The desired length of the insulation is 12 feet. It is known that the standard deviation in the cutting length is 0.15 feet. A sample of 70 cut sheets yields a mean length of 12.14 feet. This sample will be used to obtain a 99% confidence interval for the mean length cut by machine.
-Referring to Table 8-3, the critical value to use in obtaining the confidence interval is______

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Definitions:

International Organization for Standardization

A worldwide federation of national standards bodies that develops and publishes a wide range of proprietary, industrial, and commercial standards.

Anti-Bribery Compliance Programs

Programs implemented by organizations to prevent bribery and comply with anti-bribery laws, including training and procedures to identify and mitigate risks.

Economic and Monetary Union

A type of trade bloc which combines an economic union with a monetary union, involving the adoption of a single currency among member countries.

EU

The European Union, a political and economic union of 27 member states that are located primarily in Europe, with its own legislative bodies to enact policies and laws applicable across member states.