If Two Random Samples of Sizes $n _ { 1 }$

question 26

Multiple Choice

If two random samples of sizes $n _ { 1 }$ and $n _ { 2 }$ are selected independently from two non-normally distributed populations, then the sampling distribution of the sample mean difference, $\bar { X } _ { 1 } - \bar { X } _ { 2 }$ , is:

• A)always non-normal.
• B)always normal.
• C)approximately normal only if \(n _ { 1 }\) and \(n _ { 2 }\) are both larger than 30.
• D)approximately normal regardless of \(n _ { 1 }\) and \(n _ { 2 }\) .

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Definitions:

Journal

A record where all financial transactions are initially documented in chronological order.

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The act of documenting business transactions in the financial books of a company.

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Accounts on a company's balance sheet that represent the ownership interest of shareholders, including common stock, retained earnings, and additional paid-in capital.

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Accounting entries that increase liabilities or equity accounts, or decrease asset or expense accounts, reflecting the sources of the value in the transaction.