Compute the Standardized Test Statistic $X ^ { 2 }$ To Test the Claim

question 10

Multiple Choice

Compute the standardized test statistic, $X ^ { 2 }$ to test the claim $\sigma ^ { 2 } \geq 12.6 \text { if } \mathrm { n } = 15 , \mathrm {~s} ^ { 2 } = 10.5 , \text { and } \alpha = 0.05$

• A)11.667
• B)8.713
• C)12.823
• D)23.891

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Definitions:

Significance Level

The chance of incorrectly dismissing the null hypothesis in a statistical examination, commonly signified by alpha (α), when in fact it is correct.

Independent Variables

Variables in an experiment or study that are manipulated or categorized by the researcher to determine their effect on dependent variables.

Durbin-Watson Statistic

A test statistic used to identify the presence of autocorrelation (correlation of adjacent residuals) in the residuals from a regression analysis.

First-Order Autocorrelation

A statistical measure of the relationship between a variable's current value and its immediate previous value.