The Sample Size Needed to Estimate a Population Mean Within

question 126

Multiple Choice

The sample size needed to estimate a population mean within 2 units with a 95% confidence when
The population standard deviation equals 8 is

• A) 9
• B) 61
• C) 62
• D) 8
• E) 50

---

Definitions:

Withdrawal Symptoms

Physical or psychological symptoms that occur after stopping or reducing intake of a substance that was used regularly.

Schizophrenia

An emotional disorder that manifests in altered cognitive function, emotional instability, impaired perceptions, and difficulties in social engagements.

Cannabis Abuse

The excessive or inappropriate use of cannabis, leading to significant impairment or distress.

Tolerance

The process by which the body becomes less responsive to a substance or drug over time, requiring larger doses to achieve the same effect.