Brian Vanecek, VP of Operations at Portland Trust Bank, Is

question 37

Multiple Choice

Brian Vanecek, VP of Operations at Portland Trust Bank, is evaluating the service level provided to walk-in customers.Accordingly, his staff recorded the waiting times for 64 randomly selected walk-in customers and determined that their mean waiting time was 15 minutes.Assume that the population standard deviation is 4 minutes.The 95% confidence interval for the population mean of waiting times is ________.

• A)14.02 to 15.98
• B)7.16 to 22.84
• C)14.06 to 15.94
• D)8.42 to 21.58
• E)19.80 to 23.65

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Definitions:

Magical Thinking

The belief that one's thoughts, actions, or words can directly influence the external world in an irrational way, often characteristic of childhood developmental stages.

Centration

A cognitive limitation in early childhood, where one focuses on a single, salient aspect of an object or situation, ignoring other relevant features.

Conservation

In cognitive development, the understanding that properties such as mass, volume, and number remain the same despite changes in the forms of objects.

Silly Putty

A silicone-based polymer toy known for its unique properties such as elasticity, bounce, and the ability to lift images from newsprint.