The Comparison Distribution for a T Test for Independent Means

question 24

Multiple Choice

The comparison distribution for a t test for independent means is a t distribution (as opposed to a normal curve) because:

• A)tables are not available for the normal curve
• B)the population variance is estimated
• C)Z distributions were not used at the time the t test for independent means was invented
• D)there are more degrees of freedom for a single sample than for when you use two samples

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Definitions:

Suicide Precautions

Measures taken to prevent a person from attempting suicide, often involving close supervision and removal of means to inflict self-harm.

Suicide Precautions

Measures implemented in healthcare and institutional settings to prevent individuals at risk from harming or killing themselves.

One-On-One Nursing Observation

A high level of healthcare monitoring where a nurse is assigned to watch a patient continuously.

Lethality

The capacity or potential to cause death or serious harm.