TABLE 8-2 A Quality Control Engineer Is Interested in the Mean Length

question 45

Short Answer

TABLE 8-2
A quality control engineer is interested in the mean length of sheet insulation being cut automatically by machine. The desired mean 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 8-2, suppose the engineer had decided to estimate the mean length to within 0.03 with 99% confidence. Then the sample size would be ________.

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Washington-Moscow "Hot Line"

A direct communication link established in 1963 between the United States and the Soviet Union to prevent accidental nuclear war.

Civil-defense System

A framework of measures, including emergency services and community protocols, designed to protect the civilian population in the event of a national emergency, especially wartime calamities.

Immigration Quotas

Laws or policies setting limits on the number of immigrants allowed to enter a country each year.

Racially Based

Racially Based pertains to actions, decisions, or policies that are influenced by race or ethnicity, often leading to unequal treatment or discrimination.