Consider a Set of 50 Measurements with a Mean of 50.2

question 2

Multiple Choice

Consider a set of 50 measurements with a mean of 50.2 and a standard deviation of 18.7 and with the observed and expected frequencies reported below.It is desired to test whether these measurements came from a normal population.What is the value of the chi-square test statistic? $$\begin{array} { l c c } \text { Interval } & \text { Observed Frequencies } & \text { Expected frequencies } \\39.99 \text { and less } & 12 & 14.56 \\40 - 59.99 & 18 & 20.365 \\60 - 79.99 & 15 & 12.28 \\80 \text {-and higher } & 5 & 2.795\end{array}$$

• A)2.82
• B)3.07
• C)6.79
• D)8.28
• E)10.56

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Definitions:

Authoritarian

A governing or parental style characterized by strict obedience to authority, at the expense of personal freedom.

Reactive Aggression

Aggressive behavior that is displayed in response to a perceived threat or provocation, often impulsive and without premeditation.

Bullying

Aggressive, unwanted behavior among school-aged children that involves a real or perceived power imbalance.

Concern

The feeling of worry, interest, or care about someone or something.