In a Study to Determine the Least Amount of Time

question 11

Multiple Choice

In a study to determine the least amount of time necessary to clean an SUV while maintaining a high quality standard, the owner of a chain of car washes designed an experiment where 20 employees were divided into four groups, each with five members. Each member of each group was assigned an SUV to clean within a certain time limit. The time limits for the groups were 20 minutes, 25 minutes, 30 minutes, and 35 minutes. After the time limits for each group had expired, the owner inspected each SUV and rated the quality of the cleaning job on a scale of 1 to 10. What are the possible values of the response variable?

• A) the quality ratings: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
• B) the time limits: 20 min, 25 min, 30 min, 35 min
• C) the number of employees in each group: 5
• D) the number of groups: 4

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Definitions:

Juveniles From Hatcheries

Young fish or other aquatic animals that have been bred and raised in artificial environments like hatcheries for various purposes, including stocking and conservation.

Dams

Structures built across rivers or streams to control the flow of water for the purposes of water storage, flood prevention, irrigation, and hydroelectric power generation.

Wetlands

Ecosystems characterized by the presence of standing water, which support a diverse range of plant and animal life and provide critical ecological services.

Southern Ontario

A region of the Canadian province of Ontario, located in the southernmost part of the country, known for its dense population and significant industrial activity.