In a study to determine the least amount of time necessary to clean an SUV while

Question

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 number of groups: 4

C. the number of employees in each group: 5

D. the time limits: 20 min, 25 min, 30 min, 35 min

Explanation / Answer

here as independent variable is time limit on the basis of which quality rating has been given

therefore option A is correct.

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