Which Critical Value Is Appropriate for a 99% Confidence Level $\sigma$

question 9

Multiple Choice

Which critical value is appropriate for a 99% confidence level where n = 17; $\sigma$ is unknown and the population appears to be normally distributed?

• A) \(t _ { \alpha / 2 } = 2.921\)
• B) \(z _ { \alpha / 2 } = 2.583\)
• C) \(z _ { \alpha / 2 } = 2.567\)
• D) \(t _ { \alpha / 2 } = 2.898\)

---

Definitions:

Pap Test

A medical test performed on women to screen for cervical cancer by collecting cells from the cervix to identify any abnormalities.

Prenatal Visits

Regularly scheduled medical appointments during pregnancy to monitor the health of the mother and developing fetus.

Fundus

That portion of an organ most remote from its opening; with the uterus, the body of the uterus above the openings of the fallopian tubes.

HPV Test

A medical test that checks for the presence of the human papillomavirus, a virus that can lead to cervical cancer and other types of cancer.