A Two-Tailed Test Is Conducted at the 5% Significance Level

question 21

Multiple Choice

A two-tailed test is conducted at the 5% significance level. Which of the z-scores below is the smallest one that leads to rejection of the null hypothesis?

• A) 1.12
• B) 1.48
• C) 1.84
• D) 2.15

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Definitions:

Crystallized Intelligence

The ability to use learned knowledge and experience, which typically increases with age.

Fluid Intelligence

The ability to think abstractly, reason, identify patterns, solve problems, and discern relationships without relying on acquired knowledge.

Competence

The ability to do something successfully or efficiently, often referring to a specific skill or set of skills.

Social Clock

A cultural or societal timetable that dictates the appropriate age or time frame for major life events, like marriage, parenthood, and retirement.