In Testing for Differences Between the Means of Two Independent $H _ { 0 } : \mu _ { 1 } - \mu _ { 2 } = 2$

question 136

Multiple Choice

In testing for differences between the means of two independent populations, the null hypothesis is:

• A)\(H _ { 0 } : \mu _ { 1 } - \mu _ { 2 } = 2\)
• B)\(H _ { 0 } : \mu _ { 1 } - \mu _ { 2 } = 0 .\)
• C)\(H _ { 0 } : \mu _ { 1 } - \mu _ { 2 } > 0\)
• D)\(H _ { 0 } : \mu _ { 1 } - \mu _ { 2 } < 2\)

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Definitions:

Effect Size

A metric that assesses the extent of a phenomenon or the robustness of the link between variables.

Z-Test Statistic

A statistical measure used in hypothesis testing, representing the number of standard deviations a data point is from the mean.

Interpret

To explain the meaning of information, data, or actions to understand their significance or implications.

One-Sample Z-Test

A statistical hypothesis test used to determine whether the mean of a single sample is significantly different from a known or hypothesized population mean.