Albert Abbasi,VP of Operations at Ingleside International Bank,is Evaluating the Service

question 56

Multiple Choice

Albert Abbasi,VP of Operations at Ingleside International Bank,is evaluating the service level provided to walk-in customers. Accordingly,he plans a sample of waiting times for walk-in customers. If the population of waiting times has a mean of 15 minutes and a standard deviation of 4 minutes,the probability that Albert's sample of 64 will have a mean less than 16 minutes is ________.

• A) 0.4772
• B) 0.0228
• C) 0.9072
• D) 0.9544
• E) 0.9772

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Definitions:

Proportion

A portion, fraction, or quantity evaluated in relation to its entire magnitude.

Samples

Small, manageable subsets of a population used in statistical analysis to estimate characteristics of the entire population.

Nonconforming Items

Items that fail to meet the quality standards or specifications required in a production process or delivery.

Distribution

In statistics, the way in which values of a variable or numbers are spread or distributed across possible values or ranges.