When Testing $H _ { 0 } : \mu _ { 1 } - \mu _ { 2 } = 0$

question 165

Multiple Choice

When testing $H _ { 0 } : \mu _ { 1 } - \mu _ { 2 } = 0$ vs. $H _ { 1 } : \mu _ { 1 } - \mu _ { 2 } \neq 0$ , the observed value of the z-score was found to be -2.15. Then, the p-value for this test would be

• A).0158
• B).0316
• C).9842
• D).9684

---

Definitions:

Supported

The state or condition of being backed up with evidence or data, making an assertion more robust or credible.

Reject

In statistics, to conclude that there is enough evidence to discard the null hypothesis in favor of the alternative hypothesis.

F-Ratio

A statistical measure used in the context of ANOVA, calculated as the variance between sample means divided by the variance within the samples.

Main Effect

The direct impact of an independent variable on a dependent variable in an experimental design, ignoring interaction effects.