In a Two-Tail Test for the Population Mean,the Null Hypothesis $\alpha$

question 158

Multiple Choice

In a two-tail test for the population mean,the null hypothesis will be rejected at $\alpha$ level of significance if the value of the standardized test statistic z is such that:

• A) z > z _\(\alpha\)
• B) z < -z _\(\alpha\)
• C) -z _\(\alpha\) < z < z _\(\alpha\)
• D) | z | > z _{\(\alpha\) / 2}

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Definitions:

MINITAB Output

The results or output generated from analysis conducted using the MINITAB statistical software.

Regression Analysis

A set of statistical processes for estimating the relationships among variables, often used to predict the value of a dependent variable based on the value of one or more independent variables.

Least Squares

A mathematical method used in regression analysis to find the line of best fit for a set of data by minimizing the sum of the squares of the differences between the observed values and those predicted by the model.

Coefficient Of Correlation

A statistical measure that calculates the strength and direction of a linear relationship between two variables.