For a Standard Normal Distribution, the Probability of Z $\le$ 0 Is
A)zero
B)-0

question 38

Multiple Choice

For a standard normal distribution, the probability of z $\le$ 0 is

• A)zero
• B)-0.5
• C)0.5
• D)one

---

Definitions:

Variable-ratio

A schedule of reinforcement where a response is reinforced after an unpredictable number of responses, leading to a high and steady response rate.

Fixed-ratio

A schedule of reinforcement where a response is reinforced only after a specified number of responses, often used in behavior analysis.

Biological Predisposed

An inherent inclination or natural tendency for individuals to exhibit certain behaviors or characteristics due to genetic factors.

Aversive Events

Incidents or stimuli that are unpleasant or noxious, leading to avoidance behavior.