Two Independent Samples of Sizes 40 and 50 Are Randomly

question 53

Multiple Choice

Two independent samples of sizes 40 and 50 are randomly selected from two populations to test the difference between the population means . Assume the population variances are known. The sampling distribution of the sample mean difference is:

• A)normally distributed.
• B)approximately normal.
• C)Student t- distributed with 88 degrees of freedom.
• D)None of these choices.

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Definitions:

Agency by Operation of Law

A legal principle that creates an agency relationship due to circumstances or law rather than an agreement between the agent and principal.

Charges

Fees or financial obligations imposed by an entity for services rendered or as penalties for non-compliance with laws or regulations.

Account

A record summarizing the financial transactions pertaining to a specific period or purpose, such as savings or checking in a bank.

Agency by Ratification

A situation where actions taken by a person who is not officially an agent are approved and accepted by the principal after the fact, thereby creating an agency relationship.