Show That the Point $( 1 / \sqrt { 5 } , - 2 / \sqrt { 5 } )$

question 106

Short Answer

Show that the point $( 1 / \sqrt { 5 } , - 2 / \sqrt { 5 } )$ is on the unit circle.

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Definitions:

Rejection Region

The set of values for which the null hypothesis is rejected in hypothesis testing.

Typing Speeds

The measure of how fast an individual can type, often expressed in words per minute (WPM), influencing productivity in many computer-related tasks.

Z-statistic

A statistical measurement that represents the number of standard deviations a data point is from the mean of a data set.

Parametric Tests

Statistical tests based on assumptions about the distribution of the data (e.g., that it is normally distributed).