A Study Found Statistically Significant Results for a Hypothesis Tested

question 68

Multiple Choice

A study found statistically significant results for a hypothesis tested with an independent-samples t test.The author of the study reported her effect size for the test as 1.24.What is true of the two sample means?

• A) The two sample means overlap 85 percent.
• B) The two sample means likely come from the same distribution.
• C) The two sample means do not indicate meaningful differences between groups.
• D) The two sample means are 1.24 standard deviations apart.

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Definitions:

ATC

Average Total Cost, which is the total cost of production (including both fixed and variable costs) divided by the number of units produced.

AVC

stands for Average Variable Cost, which is the total variable cost divided by the quantity of output produced.

MC

Marginal Cost, the increase in total cost that arises from producing one additional unit of a good or service.

AVC

Average Variable Cost, the variable cost per unit of output.