A Package Delivery Service Claims That No More Than 5

question 121

Multiple Choice

A package delivery service claims that no more than 5 percent of all packages arrive at the address late. Assuming that the conditions for the binomial hold, if a sample of size 10 packages is randomly selected and the 5 percent rate holds, what is the probability that more than 2 packages will be delivered late?

• A) 0.0115
• B) 0.0105
• C) 0.0862
• D) 0.0746

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Definitions:

Systematic Desensitization

A behavioral therapy technique aimed at reducing phobic or anxiety responses by gradual exposure to the feared object or situation paired with relaxation techniques.

Cognitive Therapy

A form of psychotherapy that aims to change negative patterns of thinking or behavior that contribute to an individual's psychological distress.

Token Economy

A behavioral modification system based on the systematic reinforcement of target behavior through the distribution and exchange of tokens.

Counterconditioning

A behavior therapy technique where a maladaptive response to a stimulus is replaced with a more desirable one.