The Results of a Wagner Turbidity Test Performed on 15

question 54

Essay

The results of a Wagner turbidity test performed on 15 samples of standard Ottawa testing sand were (in microamperes) $\begin{array} { l l l l l l l l } 26.9 & 25.8 & 24.4 & 24.1 & 26.4 & 25.9 & 24.0 & 21.7 \\24.9 & 25.9 & 27.3 & 26.7 & 26.9 & 24.8 & 27.3 &\end{array}$
a. Is it plausible that this sample was selected from a normal population distribution?
b. Calculate an upper confidence bound with confidence level 90% for the population standard deviation of turbidity.

---

Definitions:

Relationship Oriented

An approach or behavior that prioritizes building and maintaining strong interpersonal relationships above other considerations.

Evolutionary Approach

A theoretical perspective in psychology that examines the role of evolutionary processes (natural selection, adaptation) in shaping human behavior and mental processes.

Intergroup Conflict

A situation where members of different groups experience friction, opposition, or antagonism, often arising from competition for resources, differences in values, or perceived threats.

High LPC

In leadership theory, LPC stands for Least Preferred Coworker, and high LPC leaders are those who describe their least preferred coworker in positive terms, typically focusing on relationships over task completion.