When the population is normally distributed and the population standard deviation σ is unknown,then for any sample size n,the sampling distribution of 
is based on the z distribution.
Definitions:
Equity
The amount of funds contributed by owners (shareholders) plus the retained earnings (or losses), representing ownership interest in a firm.
Capital Balances
The amount of money that the partners or owners of a business have contributed or acquired through retained earnings.
Partnership Liabilities
The debts and obligations for which a partnership is legally responsible, typically shared among the partners according to their agreement.
Creditors
Individuals or organizations to whom a company or person owes money for services or goods provided.
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