A Researcher Is Testing a Hypothesis of a Single Mean $\alpha$

question 73

Multiple Choice

A researcher is testing a hypothesis of a single mean.The critical z value for $\alpha$ = .05 and a two-tailed test is +1.96.The observed z value from sample data is -1.85.The decision made by the researcher based on this information is to ___ the null hypothesis.

• A)reject
• B)not reject
• C)redefine
• D)change the alternate hypothesis into
• E)restate the null hypothesis

---

Definitions:

Proportion

A part or share of a whole, often expressed as a ratio or fraction, indicating the relationship in size or amount between parts.

Means

The average that is derived by adding up all the values of a given series and dividing by the number of values.

Teaspoon

A small spoon typically used for measuring or stirring liquids, equivalent to about 5 milliliters in capacity.

Abbreviation

The shortened form of a word or phrase, used to simplify longer terms without losing their meaning.