What Is the Average Value Expected for the Independent-Measures T

question 8

Multiple Choice

What is the average value expected for the independent-measures t statistic if the null hypothesis is true?

• A)0
• B)1
• C)±1
• D)M1 - M2

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Definitions:

Critical Value

A threshold in a statistical test that defines the boundary for deciding whether a test statistic leads to the rejection of the null hypothesis.

Sample Mean

The average of all the data points in a sample, used as an estimate of the population mean.

Sample Standard Deviation

A measure of the dispersion or variability of data points in a sample from the sample mean.

Significance Level

A threshold set by researchers before conducting an experiment to determine at what probability level results will be considered statistically significant, commonly set at 0.05 or 5%.