A Spinner Is Mounted on a Piece of Cardboard Divided $\frac { 1 } { 6 }$

question 31

Essay

A spinner is mounted on a piece of cardboard divided into six areas of equal size. Each of the six areas is a different color (blue, yellow, red, green, white and orange). When the spinner is spun, each color should be selected by the spinner approximately $\frac { 1 } { 6 }$ of the time. A student suspects that a certain spinner is defective. The suspected spinner is spun 90 times. The results are shown below. Test the student's claim. Use α=0.10 .
$\begin{array} { l | c c c c c c } \text { Color } & \text { Blue } & \text { Yellow } & \text { Red Green } & \text { White Orange } \\\hline \text { Frequency } & 12 & 11 & 17 & 16 & 19 & 15\end{array}$

---

Definitions:

Psychological Tests

Standardized measures designed to assess various aspects of an individual's mental functions and behaviors.

Standardised Measures

Tests or assessment tools that have been normed and validated to ensure consistency and comparability across different individuals or groups.

Predict Behaviour

Predicting behaviour involves using knowledge of past actions and psychological principles to anticipate future actions of individuals or groups.

Aptitude Tests

Standardized tests designed to measure an individual's potential to acquire skills and knowledge.