THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A dependent random sample from two normally distributed populations gives the following results:
n = 15, 
= 20.5,and sd = 2.4
-Find the margin of error for a 95% confidence interval for the difference in the means of the two populations.
Definitions:
Aggregate Supply Curve
A graphical representation that shows the relationship between the overall price level in an economy and the total output produced by firms.
Aggregate Demand Curve
Represents the total quantity of all goods and services demanded by the economy at different price levels.
Aggregate Demand Curve
A curve that represents the total demand for all goods and services in an economy at different price levels, holding all else constant.
Price Level
An index that measures the average prices of goods and services within an economy over a period of time.
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