A Trading Magazine Wants to Determine the Number of Hours

question 112

Multiple Choice

A trading magazine wants to determine the number of hours stockbrokers work each week. In particular, the trading magazine wants to determine if the median number of hours worked per week differs from 100 hours. The magazine samples 18 traders. For the Wilcoxon signed-rank test, the value of the test statistic is T = T⁺ = 153. If the sampling distribution of T can be approximated by the normal distribution, the value of the z test statistic is ________.

• A) 153
• B) 2.94
• C) 0.128
• D) −2.94

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Definitions:

Conservation

In cognitive development, the understanding that certain properties of objects remain the same, despite changes in the object's appearance.

Egocentrism

A cognitive characteristic in which an individual is unable to differentiate between their own perspective and that of another person.

Affordances

The possibilities for action offered by objects and environments to an organism.

Information-Processing Theory

A framework in cognitive psychology that compares human thought processes to a computer's operation, focusing on how information is received, processed, stored, and retrieved.