Which of the Following Normal Reference Intervals Is Incorrect for an Arterial

question 14

Multiple Choice

Which of the following normal reference intervals is incorrect for an arterial blood sample?

• A)pH = 7.35 - 7.45
• B)pCO₂ = 24 - 28 mmHg
• C)HCO₃ = 22 - 26 mmol/L
• D)TCO₂ = 23 - 27 mmol/L

---

Definitions:

Confidence Interval

A range of values that is likely to contain the true value of an unknown parameter, often used in statistical analysis to indicate the reliability of an estimate.

Two-proportion Z-test

A statistical test used to compare two population proportions to determine if they are different.

Null Hypothesis

In statistical hypothesis testing, it represents the hypothesis that there is no significant difference or effect, serving as the default or initial assumption.

Margin of Error

The amount of error that can be tolerated in statistical results, representing the range within which the true population parameter is expected to lie.