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 
?
Definitions:
Contractors
Individuals or organizations contracted to perform specific tasks or services for a defined period under agreed terms.
Amortized Loan
A loan with scheduled periodic payments that consist of both principal and interest.
Pure Discount
A financial instrument, such as a zero-coupon bond, that is sold at a discount and pays no interest, only returning the face value at maturity.
Interest-Only
A debt repayment strategy where the borrower pays only the interest on the principal balance, with the principal balance unchanged.
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