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The data below give the weights in ounces of randomly-selected bars of bath soap produced by two different molding machines. The question of interest is whether these two molding machines produce soap bars of differing average weight. Find a 95% confidence interval for the population difference assuming that the weights for the two machines are approximately normal.
Samuel Gompers
An American labor leader and the first president of the American Federation of Labor, who promoted organized labor and labor rights in the late 19th and early 20th centuries.
Class Collaborator
A person from a particular social or economic class who works with members from another class, often in a political or economic context.
Pension Reform
Changes or adjustments made to pension policies to maintain their sustainability, often involving modifications to eligibility, benefits, or funding mechanisms.
Progressive Era
A period of widespread social activism and political reform in the United States from the 1890s to the 1920s, aiming to address issues caused by industrialization.
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