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Chapter 6: Q4 (page 240)

Notation What does the notation Zα indicate?

Short Answer

Expert verified

zα indicates a critical value on a standard normal curve with a right-side area equal to .

Step by step solution

01

Given information

An expression for critical value is given.

02

Identify the notation

The value zαdenotes a specific z-score value with an area equivalent to the measure (significance level) on its right on the standard normal curve.

The measure of significance will never fall beyond 0 and 1.

It is often recognized as a critical value with measure α.

Mathematically,

Areatotherightofzα=PZ>zα=α

For example, for α=0.05,z0.05 is a point on a standard normal curve such that area to the right of the point is 0.05.

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