When testing hypotheses about and constructing confidence intervals for μ1 − μ2, we utilize the statistic, 
. What are the mean and standard deviation of the sampling distribution of 
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Definitions:
Labor Force
The total number of people within a specific population who are actively employed or seeking employment.
Unemployment Rate
The rate of active job seekers in the labor force without current employment.
Unemployment Benefits
Financial payments made by the state or other authorized bodies to unemployed people.
World War II
A global conflict lasting from 1939 to 1945, involving most of the world's nations and marked by significant events, battles, and shifts in power.
Q2: A 1976 study of smokers over 30
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