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Assume a normal curve and that the mean of the raw scores is 8, the standard deviation is 2.65, and the test-retest reliability is .84. If an individual who is in grade 5.6 received a score of 10, answer the following questions:
-Scores with this instrument correlate .50 with 6th grade GPA. If the 6th grade GPA has a mean of 3.0 and a SD of .3, predict the GPA range this students grades will fall 68 percent of the time.
Marginal Analysis
An examination of the added benefits of an activity compared to the added costs incurred by that same activity.
Cell Phones
Portable electronic devices that allow users to make voice calls, send text messages, and access various digital services.
Total Profit
The total income a business earns after subtracting all expenses and costs associated with its operations.
Marginal Benefit
The added value or enjoyment a consumer gets from using an additional unit of a product or service.
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