A Hypothesis Test That Rho Is Zero Is Conducted at the 5

question 126

Multiple Choice

A hypothesis test that rho is zero is conducted at the 5% level of significance. If Spearman's (rho) is 0.50 for a sample of 15 observations, what is the critical value?

• A) \(\pm\)2.160
• B) \(\pm\)2.131
• C) \(\pm\)1.771
• D) \(\pm\)1.753

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Definitions:

Incidence

The rate at which new cases of a disease or condition appear over a certain period of time, typically per year.

Placebo Control Group

In a therapy outcome study, group of people whose treatment is an inactive substance (to compare with the effects of a drug) or a nontheory-based therapy providing social support (to compare with the effects of psychotherapy).

Ethical Problem

A situation that requires a person to choose between alternatives that must be evaluated as right (ethical) or wrong (unethical).

Withholding Treatment

The ethical and medical decision not to administer a specific medical treatment to a patient, often under circumstances where the treatment will not improve quality of life or extend it in a meaningful way.