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:

Intraoperation Scope

The range or extent of activities and processes conducted within a single operation or phase of production or service delivery.

Supply Chain Surplus

The total value created by the supply chain, computed as the difference between the value of the final product to the consumer and the costs of the supply chain activities.

Implied Demand Uncertainty

The anticipated variation in customer demand, influencing inventory levels, production planning, and capacity decisions.

Forecast Error

The difference between actual demand and forecasted demand, indicative of the accuracy of demand forecasting efforts.