A Student Wanted to Quickly Construct a 99% Confidence Interval

question 15

Multiple Choice

A student wanted to quickly construct a 99% confidence interval for the average age of students in her statistics class. She randomly selected 9 students. Their average age was 19.1 years with a standard deviation of 1.5 years. What is the 99% confidence interval for the population mean?

• A) [17.42, 20.78]
• B) [17.48, 20.72]
• C) [14.23, 23.98]
• D) [0.44, 3.80]
• E) [17.95, 20.25]

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Definitions:

Auditory Hallucinations

A form of hallucination that involves perceiving sounds without auditory stimulus, often experienced as voices speaking to or about the person experiencing them.

Olfactory

Relating to the sense of smell, including the detection and perception of odors.

Visual

Pertaining to the sense of sight and the ability to interpret the surrounding environment through light in the visible spectrum.

Loose Associations

A thought disorder characterized by a disorganized way of thinking, where connections between thoughts are unclear or not logical.