The Manager of a Video Library Would Like the Variance

question 98

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. At α = 0.05, which of the following is the critical value ?

• A) 13.091
• B) 32.007
• C) 35.172
• D) 38.076

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Definitions:

World Health Organization

A specialized agency of the United Nations responsible for international public health.

Center for Disease and Control

Incorrectly named; intended is likely the Centers for Disease Control and Prevention (CDC), a national public health institute in the United States.

Member Nation

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Uncontrolled Population Growth

The rapid increase in the number of individuals in a population beyond sustainable limits and resources.