The Manager of a Video Library Would Like the Variance

question 20

Multiple Choice

The manager of a video library would like the variance of the waiting times of the customers not to exceed 2.30 minutes-squared. He would like to add an additional billing counter if the variance exceeds the cut-off. He checks the recent sample data. For a random sample of 24 customer waiting times, he arrives at a sample variance of 3.8 minutes-squared. The manager assumes the waiting times to be normally distributed. Which of the following is the correct approximation of the p-value used to conduct this test?

• A) p-value lies between 0.005 and 0.010
• B) p-value lies between 0.010 and 0.025
• C) p-value lies between 0.050 and 0.10
• D) p-value lies between 0.025 and 0.05

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Definitions:

Contamination

The presence of unwanted substances or microorganisms in a material or environment, potentially causing harm or pollution.

Work In A Dark Area

Conducting tasks or operations in a location with low light levels, which may necessitate the use of additional lighting equipment for visibility.

Due Date

The specific day by which a task, obligation, or payment is expected to be completed or fulfilled.

Gross Collection Ratio

Includes the total payments received by a practice for a specific period of time, not including any write-offs. The gross collection ratio can be calculated by taking the total payments for the specific period divided by the total charges, again without considering write-offs.