Random Samples of Size 81 Are Taken from a Process

question 38

Multiple Choice

Random samples of size 81 are taken from a process (an infinite population) whose mean and standard deviation are 200 and 18, respectively. The distribution of the population is unknown. The mean and the standard error of the distribution of sample means are _____.

• A) 200 and 18
• B) 81 and 18
• C) 9 and 2
• D) 200 and 2

---

Definitions:

Panic Disorder

An anxiety disorder characterized by recurrent unexpected panic attacks and fear of experiencing further attacks.

Emotional Disturbance

A term used in educational settings to describe students who exhibit emotional or behavioral responses so different from their peers that they adversely affect their educational performance.

Agoraphobia

An anxiety disorder characterized by intense fear of places where escape might be difficult, or help might not be available, often leading to avoidance of such places.

Panic Disorder

A mental health condition characterized by sudden and repeated episodes of intense fear accompanied by physical symptoms such as chest pain, heart palpitations, and shortness of breath.