Examlex
If the mean of a test is 80 and the standard deviation is 10,a person with a z-score of -2.0 scored which of the following on the test?
Barter System
An exchange system in which goods or services are directly exchanged for other goods or services without the use of money.
Goods
Physical items that are produced for sale on the market, which can satisfy human wants or needs, such as food, clothes, and cars.
Trade
The exchange of goods, services, or both between two or more parties, either within the same country or across international borders.
Different Goods
Variety of products or items that satisfy different needs and wants or provide various forms of utility to consumers.
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