In a Manufacturing Process a Random Sample of 9 Bolts

question 37

Multiple Choice

In a manufacturing process a random sample of 9 bolts manufactured has a mean length of 3 inches with a standard deviation of .3 inches.What is the 95 percent confidence interval for the true mean length of the bolt?

• A)2.804 to 3.196
• B)2.308 to 3.692
• C)2.769 to 3.231
• D)2.412 to 3.588
• E)2.814 to 3.186

---

Definitions:

Baseline Activity

The level of cellular, biochemical, or physiological function before a specific stimulus or intervention is applied.

Major Depression

A mood disorder characterized by persistent feelings of sadness, loss of interest in activities, and a variety of emotional and physical symptoms.

Hallucinations

Hallucinations are perceptions in the absence of external stimuli that have qualities of real perception, often seen in psychiatric disorders like schizophrenia.

Adult-onset Schizophrenia

A subtype of schizophrenia that manifests in individuals typically after the age of 18, characterized by delusions, hallucinations, and cognitive deficits.