You Should Conduct a Z-Test Instead of a One-Sample T-Test

question 14

Multiple Choice

You should conduct a z-test instead of a one-sample t-test when ______.

• A)  and s are known
• B) x̄ and s are known
• C)  and   are known
• D) all of these

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Definitions:

Coefficient of Determination

A statistical measure, often denoted as \(R^2\), which quantifies the amount of variance of the dependent variable that can be explained by the independent variable(s).

Coefficient of Correlation

A mathematical indicator that evaluates the intensity of the connection between two factors.

Sum of Squares

A measure used in statistical analyses to quantify the variation or deviation of data points from their mean; the total of each data point's squared difference from the mean.

Regression SSR

Regression SSR (Sum of Squares for Regression) quantifies the variation explained by the linear model in regression analysis.