Let the Random Variable Z Follow a Standard Normal Distribution,and

question 209

Multiple Choice

Let the random variable Z follow a standard normal distribution,and let z₁ be a possible value of Z that is unknown but identifiable by position and area.Find z₁ if the symmetrical area between a negative z₁ and a positive z₁ is 0.9544.

• A)2.00
• B)0.11
• C)2.50
• D)0.06

---

Definitions:

Pilot

A preliminary study or trial run conducted to assess feasibility, time, cost, risk, and adverse events.

Unanticipated Measurement

An unexpected value or observation that arises during the process of data collection or experimentation.

Sampling Frame

A list or database from which a sample is drawn for a study, representing the larger population.

Attempted Census

An effort made to enumerate every individual in a population, which may not be fully completed due to various reasons such as non-response or logistical challenges.