Exhibit 9-2

question 110

Multiple Choice

Exhibit 9-2.The owner of a large car dealership believes that the financial crisis decreased the number of customers visiting her dealership.The dealership has historically had 800 customers per day.The owner takes a sample of 100 days and finds the average number of customers visiting the dealership per day was 750.Assume that the population standard deviation is 350. Refer to Exhibit 9-2.The value of the test statistic is ____________.

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Definitions:

Carrying Capacity

The highest population level of a species that can be maintained over time in an environment, considering the resources present.

Sylvatic Plague

A naturally occurring disease found in wild rodent populations, caused by the bacterium Yersinia pestis, and can spread to humans and other animals.

Pesticide Spraying

The application of chemicals to crops and other areas to control pests and diseases that can damage agricultural production and natural environments.

World Health Organization

An international public health agency of the United Nations responsible for global health matters, including disease outbreaks and global healthcare standards.