The Number of Degrees of Freedom Needed to Construct 90

question 40

Multiple Choice

The number of degrees of freedom needed to construct 90% confidence interval for the difference between means when the data are gathered from paired samples,with 15 observations in each sample,is

• A)30.
• B)15.
• C)28.
• D)14.

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Definitions:

Precertification

Refers to obtaining plan approval for services prior to the patient receiving them; refers to seeking approval for a treatment (surgery, hospitalization, diagnostic test) under the patient’s insurance contract.

Specified Outpatient

Specified Outpatient refers to particular outpatient medical treatments or procedures that are predefined under a health plan or policy for coverage or reimbursement.

Coordination of Benefits (COB)

A process in health insurance to determine the order of responsibility when a person is covered by more than one insurance plan, to avoid overlapping payments.

Duplication of Payment

An error or fraud resulting in the repeated payment for a single invoice or service.