If We Are Using a Nondirectional Alternative Hypothesis for a Z-Test

question 38

Multiple Choice

If we are using a nondirectional alternative hypothesis for a z-test with α = .05, what critical value(s) should be used for rejecting the null hypothesis?

• A) -1.96 only or +1.96 only.
• B) +1.65 only or -1.65 only.
• C) either ±1.96
• D) either ±1.65

---

Definitions:

Endometriosis

A painful, chronic condition where tissue similar to the lining inside of the uterus grows outside the uterus, leading to pain and infertility.

Menarche

The occurrence of the first menstrual cycle in adolescent females, a key event in female puberty.

Ortho Evra

A type of birth control patch applied to the skin that releases hormones to prevent pregnancy.

Brevicon

A type of combined oral contraceptive pill that contains low doses of synthetic estrogen and progestin.