A Random Sample of Size 20 Taken from a Normally

question 130

Short Answer

A random sample of size 20 taken from a normally distributed population resulted in a sample variance of 32. The lower limit of a 90% confidence interval for the population variance would be: $\begin{array}{|l|l|}\hline\text { A. } & 52.185 . \\\hline \text { B. } & 20.375 . \\\hline \text { C. } & 20.170 . \\\hline \text { D. } & 54.931 . \\\hline\end{array}$

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Definitions:

Illegal Drugs

Substances whose manufacture, possession, or use is prohibited by law.

Human Brain

The central organ of the human nervous system, responsible for thought, memory, emotion, touch, motor skills, vision, respiration, temperature control, and other functions.

Nerve Cells

Also known as neurons, specialized cells in the nervous system that transmit information through electrical and chemical signals.

Human Nervous System

The part of the body that coordinates its voluntary and involuntary actions and transmits signals to and from different parts of its body.