Misha Is Comparing Different Types of Typing Instruction

question 32

Multiple Choice

Misha is comparing different types of typing instruction. In one group, he used a classroom-based instructional method, and for the other group, he used a computer-based training program. After a six-week treatment, he assessed differences in their typing ability. Of the following, which is the appropriate test of significance for Misha to use assuming random assignment and no pretreatment differences?

• A) The t test for independent samples
• B) The t test for nonindependent samples
• C) Analysis of difference scores
• D) ANOVA

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Definitions:

DC Voltage

Direct current voltage, where the flow of electric charge is in one direction.

AC Voltage

Alternating Current voltage, where the flow of electric charge periodically reverses direction, commonly used in power supply systems worldwide.

Encoder

A rotary device that transmits position information; a device that transmits a fixed number of pulses for each revolution.

Digital Signal

An electronic signal that represents data as a series of discrete values, typically used in digital electronics and communication.