In Testing the Difference Between Two Means from Two Normally

question 12

Multiple Choice

In testing the difference between two means from two normally distributed independent populations,the distribution of the difference in sample means will be:

• A)Normally distributed only if sample sizes are equal.
• B)Normally distributed only if both population standard deviations are known.
• C)Normally distributed.
• D)Normally distributed if both sample sizes are very large.
• E)Normally distributed only if both population variances are equal.

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Definitions:

Total Revenue

The total income generated from the sale of goods or services before any expenses are subtracted.

Elasticity of Supply

A measure of how much the quantity supplied of a good responds to a change in the price of that good.

Income Elasticity

A measure of how much the demand for a product changes with a change in consumers' income.

Quantity Supplied

the amount of a good or service that producers are willing and able to sell at a given price.