Exhibit 6-5 The Weight of Items Produced by a Machine Is Normally

question 12

Multiple Choice

Exhibit 6-5
The weight of items produced by a machine is normally distributed with a mean of 8 ounces and a standard deviation of 2 ounces.
-Refer to Exhibit 6-5. What is the probability that a randomly selected item weighs exactly 8 ounces?

• A)0.5
• B)1.0
• C)0.3413
• D)None of the alternative answers is correct.

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Definitions:

Fixed-Interval

A schedule of reinforcement where rewards are given after a predetermined interval of time has passed.

Variable-Ratio

A reinforcement schedule where a response is reinforced after an unpredictable number of responses, often used in behavior modification.

Variable-Interval

A schedule of reinforcement where rewards are given after a random amount of time has passed, promoting a steady response rate in behavior.

Learning

A process of acquiring new, or modifying existing, knowledge, behaviors, skills, values, or preferences through study, experience, or teaching.