Assume z is a standard normal random variable. What is the value of z if the area between -z and z is .754?
A) .377
B) .123
C) 2.16
D) 1.16

Question

Quizplus · Accepted Answer

The area between -z and z represents the central area under the standard normal distribution curve. If this area is .754, it means that 75.4% of the data falls within this range. The z-score that corresponds to the central 75.4% (or leaving 24.6% in the tails, 12.3% in each tail) is approximately 1.16. This can be found using standard normal distribution tables or a calculator designed for statistical analysis.

Assume Z Is a Standard Normal Random Variable