A Random Sample of 400 Items from a Population Shows

question 47

Multiple Choice

A random sample of 400 items from a population shows that 160 of the sample items possess a given characteristic.A random sample of 400 items from a second population resulted in 110 of the sample items possessing the characteristic.Using these data, a 99% confidence interval is constructed to estimate the difference in population proportions which possess the given characteristic.The resulting confidence interval is _______.

• A)0.06 to 0.19
• B)0.05 to 0.22
• C)0.09 to 0.16
• D)0.04 to 0.21
• E)0.05 to 0.23

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Definitions:

Service Times

The duration required to complete a specific service task or process, critical in evaluating service efficiency and customer satisfaction.

Waiting-Line System

A mathematical model used to analyze lines or queues in order to minimize waiting times and improve service efficiency.

Infinite Population

A concept in statistics and research indicating a population size so large that for practical purposes it is considered limitless.

Finite Population

A population set consisting of a limited number of distinct entities that can be fully enumerated.