A Two-Tailed Test Is Conducted at the 5% Significance Level

question 10

Multiple Choice

A two-tailed test is conducted at the 5% significance level. What is the smallest z-score listed below that results in rejection of the null hypothesis?

• A) 1.17
• B) 1.58
• C) 1.81
• D) 2.89

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Definitions:

Correlation

A statistical measure that describes the extent to which two variables change together.

Cause-and-Effect Conclusions

Refers to conclusions drawn from observed relationships where a specific event, condition, or factor is considered to lead to another event, condition, or outcome.

Independent Variable

A factor or condition that is intentionally altered by an experimenter in order to observe its impact on another variable.

Experimental Change

A deliberate alteration in conditions or variables to observe the effects in a controlled environment, typically for research purposes.