A Researcher Is Testing a Hypothesis of a Single Mean $\alpha$

question 2

Multiple Choice

A researcher is testing a hypothesis of a single mean.The critical z value for $\alpha$ = .05 and a two-tailed test is +1.96.The observed z value from sample data is -1.85.The decision made by the researcher based on this information is to ___ the null hypothesis.

• A)reject
• B)not reject
• C)redefine
• D)change the alternate hypothesis into
• E)restate

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Definitions:

Stressor

Any biological, chemical, physical, or psychological factor that causes stress to an organism, potentially leading to disease or harm.

Steady-State Condition

A situation in a dynamic system where all components are in balance and remain constant over time despite ongoing processes.

Thermoregulate

The ability of an organism to keep its body temperature within certain boundaries, even when the surrounding temperature is very different.

Shock

Shock is a critical condition brought on by the sudden drop in blood flow through the body, leading to failure of the circulatory system to maintain adequate blood flow, often resulting in damage to multiple organs.