If Two Populations Are Normally Distributed, the Sampling Distribution of the Difference

question 22

Multiple Choice

If two populations are normally distributed, the sampling distribution of the difference in the sample means, , is:

• A) approximately normal for any sample sizes.
• B) approximately normal if both sample sizes are large.
• C) exactly normal only if both sample sizes are large.
• D) exactly normal for any sample sizes.

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Definitions:

Gross Monthly Income

The gross amount of earnings received in a month prior to any deductions or taxes being subtracted.

Living Expenses

costs associated with day-to-day life, such as housing, food, and transportation.

Percent Rate

The percentage that indicates the rate at which a certain value, such as interest, increases or decreases.

Percent Rate

a rate that describes a portion of a hundred in finance, often related to interest or growth rates.