For a Repeated-Measures Study Comparing Two Treatments with a Sample

question 75

Multiple Choice

For a repeated-measures study comparing two treatments with a sample of n = 9 participants,the difference scores have a mean of M_D = 4.90 with SS = 288.What is the estimated standard error for the sample mean difference?​

• A)​36
• B)​36/8 = 4.5
• C)​4
• D)​2

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Definitions:

Entire Population

Refers to all members or elements of a defined group or category that a researcher is studying.

Null Hypothesis

A hypothesis in statistical analysis that suggests there is no effect or no difference, and it serves as a starting assumption for testing.

Research Hypothesis

A testable statement predicting a particular relationship between two or more variables in a population.

Sample Size

The number of individual observations or data points collected from a population for the purposes of statistical analysis.