Which Hypothesis Is Nondirectional

question 10

Multiple Choice

Which hypothesis is nondirectional?

• A) Hospitals with an infection-control nurse will have fewer instances of sepsis among inpatients than hospitals without an infection-control nurse.
• B) There will be a greater weight loss among dieting patients who receive a weekly supportive telephone call from a dietitian than among dieting patients who do not receive a weekly supportive phone call.
• C) There will be a difference in stage of disease for prostate cancer among men who had an abnormal prostate-specific antigen ( PSA ) screening compared with men who had an abnormal digital rectal examination ( DRE ) screening.
• D) Children who receive weekly counseling for one year after the death of a parent will perform better in school than children who do not receive weekly counseling after the death of a parent.

Know the fundamental concepts related to statistical tests, including the alternative hypothesis and Type II error.

Recognize the significance of construct validity in research and how variables represent theoretical constructs.

Understand the concept of validity in research and its implications for the accuracy of research findings.

Identify examples of experimental design elements that support the validity of research conclusions.

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Definitions:

Demand Increased

A situation where the desire to purchase goods and services at a given price level rises, leading to higher quantity demanded.

Wage Rate

The standardized amount of pay that a worker receives for performing a certain job or task, typically expressed per hour or unit of work.

Retail Market

The part of the economy that deals with the sale of goods or services directly to consumers, encompassing a wide range of businesses and stores.

OPEC Nations

Member countries of the Organization of the Petroleum Exporting Countries, a group that coordinates the petroleum policies of its members to secure fair and stable prices for petroleum producers.