Let z₁ be a z-score that is unknown but identifiable by position and area. If the symmetrical area between -z₁ and + z₁ is 0.9544, the value of z₁ is 2.0.

Question

Quizplus · Accepted Answer

The statement is true and matches the definition of a z-score. When the symmetrical area between -z and +z is 0.9544, it means that the z-score has 0.4772 of the area to the right and 0.4772 of the area to the left, leaving a total area of 0.9544 or 95.44%. A z-score of 2.0 matches this description.

Let Z1 Be a Z-Score That Is Unknown but Identifiable

Let Z₁ Be a Z-Score That Is Unknown but Identifiable