During a Test Period,an Experimental Group of 10 Vehicles Using

question 42

Multiple Choice

During a test period,an experimental group of 10 vehicles using an 85 percent ethanol-gasoline mixture showed mean CO2 emissions of 667 pounds per 1000 miles,with a standard deviation of 20 pounds.A control group of 14 vehicles using regular gasoline showed mean CO2 emissions of 679 pounds per 1000 miles with a standard deviation of 15 pounds.Assuming equal variances,the pooled variance is

• A)296.59
• B)225.00
• C)400.00
• D)522.16

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Definitions:

Monetarists

An economic philosophy highlighting the importance of government intervention in regulating the money supply.

Economic Growth

An increase in the production of goods and services in an economy over a period of time, usually measured by GDP.

Money Supply

The total amount of money available in an economy at a specific time, including cash, coins, and balances held in checking and savings accounts.

Aggregate Supply

The total supply of goods and services that firms in an economy are willing and able to sell at a given overall price level in a specified time period.