How Far Above the Top of the Shoulders Should the IR

question 14

Multiple Choice

How far above the top of the shoulders should the IR be positioned for any decubitus position of the chest?

• A) At the level of the shoulders
• B) 1 \(1 / 2\) to 2 inches above the shoulders
• C) 2 to 3 inches above the shoulders
• D) 3 to 4 inches above the shoulders

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Definitions:

Type II Error

A statistical error that occurs when a false null hypothesis is not rejected, missing an actual effect or difference.

Sample Size

The number of observations or data points in a statistical sample.

Test Power

The probability of correctly rejecting the null hypothesis, effectively detecting an actual effect when it truly exists.

Type II Error

A statistical error made by failing to reject a false null hypothesis (a false negative).