Suppose You Wanted to See If There Was a Difference

question 26

Multiple Choice

Suppose you wanted to see if there was a difference between the participants in the control group and the experimental group for the pre-test and the post-test data. What is the correct expression for the test results?

• A) U = 506, z = -0.830, p = .406 and U = 269.5, z = -2.682, p = .007
• B) U = -0.830, z = 394, p = .406 and U = -2.682, z = 269.5, p = .007
• C) U = 0.406, z = -0.830, p = 394 and U = 0.007, z = -2.682, p = 269.5
• D) U = 394, z = 0.406, p = -.830 and U = 269.5, z = 0.007, p = -2.682

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Definitions:

Variance

A measure of the spread of a set of values, calculated as the average of the squared deviations from the mean.

Index Funds

Mutual funds or ETFs designed to track the components of a market index, offering broad market exposure and low operating expenses.

Expected Monetary Value

A statistical concept that calculates the average outcome of a future event that may or may not happen, taking into account all possible scenarios and their probabilities.

Average Payoff

The expected outcome or return of an investment or decision averaged over all possible scenarios.