If the Z Statistic Is Incorrectly Used in Lieu of the T

question 142

Multiple Choice

If the z statistic is incorrectly used in lieu of the t statistic when comparing two population means based on independent,small random samples from two normally distributed populations with unknown variances,then the probability of committing a Type II error __________.

• A)increases
• B)decreases
• C)remains the same
• D)is 1
• E)is 0

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Definitions:

Lymphatic System

A part of the circulatory system and immune system that helps rid the body of toxins, waste, and other unwanted materials.

Most Infectious

Referring to a state or period when an individual or pathogen exhibits the highest capacity to spread an infection to others.

CD4 Count

A measure of the number of CD4+ T cells in the bloodstream, used to assess the health of the immune system, especially in HIV/AIDS patients.

HIV RNA

The genetic material of the human immunodeficiency virus, used in tests to detect the virus' presence in the blood.