The School of Business Has 3 Fax Machines

question 58

Multiple Choice

The school of business has 3 fax machines.The toner in each machine needs to be changed after about 5 hours of use.There is one unit secretary who is responsible for the fax machine maintenance.It takes him 15 minutes to replace the toner cartridge.What is the probability that 2 fax machines need toner at the same time?

• A).8576
• B).1286
• C).0129
• D).1415
• E)None of the above

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Definitions:

Behavior Therapies

Psychotherapeutic interventions aimed at changing maladaptive behaviors through techniques such as conditioning and reinforcement.

Pharmacotherapy

The treatment of diseases, especially mental disorders, through the administration of drugs.

Cognitive-behavior Therapy

A psychotherapeutic treatment that helps patients understand the thoughts and feelings that influence behaviors, aimed at changing negative patterns to improve the way they feel.

Meta-analyses

Statistical techniques that combine the results of multiple scientific studies to obtain a more precise estimate of the effect size of a particular variable.