A Set of Sample Scores from an Experiment Has an N

question 33

Multiple Choice

A set of sample scores from an experiment has an N = 28 and a mean = 52. H 1 is directional, predicting an effect of the independent variable which decreases the magnitude of the dependent variable. H 0 asserts the sample is a random sample from a population of scores where µ = 55 and s = 12. a = 0.05_{1 tail}. Using the z test to analyze the data, what is the correct conclusion regarding H 0 ?

• A) reject H 0 ; the independent variable has a real effect
• B) retain H 0 ; we cannot conclude that the independent variable has a real effect
• C) accept H 0 ; the independent variable has no effect
• D) reject H 0 ; the independent variable has no effect

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Definitions:

Free Recall

Free recall is a memory task in which a person is asked to remember information in any order, without cues or prompts, typically used to assess memory performance.

Knowledge Base

The accumulated information, understanding, and skills that an individual possesses, which can be added to and accessed for decision-making and problem-solving.

Memory Capacity

The volume of information or number of items that an individual can retain in their memory system at any given time.

Memory Span

The number of randomly presented items of information that can be repeated immediately after they are presented.