A Sample of 61 Observations Yielded a Sample Standard Deviation

question 47

Multiple Choice

A sample of 61 observations yielded a sample standard deviation of 6. If we want to test H₀: σ² = 40, the test statistic is

• A) 54.
• B) 9.15.
• C) 54.90.
• D) 9.

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Definitions:

Status Variables

Variables that categorize individuals based on conditions or characteristics at a specific time.

Type I Errors

Incorrectly rejecting a true null hypothesis, also known as a "false positive" finding in research.

Type II Errors

An error that occurs in statistical hypothesis testing when a false null hypothesis is not rejected, misinterpreting the absence of an effect or difference when one actually exists.

Independent Variable

A variable that is manipulated in an experiment to determine its effect on the dependent variable.