Based on observing more than 400 drivers in the Atlanta area, two investigators

Question

Based on observing more than 400 drivers in the Atlanta area, two investigators at Georgia State University concluded that people exiting parking spaces did so more slowly when a driver in another car was waiting for the space than when no one was waiting.†

(a) What is the response variable?

the number of people that exit parking spaces more slowly when another car was waiting for the space

the number of free parking spaces in your city   

the amount of time it takes a car to exit the parking space

(b) What are possible extraneous factors? (Select all that apply.)the mileage of the cars

location of the parking spaces

time of day

the color of the cars

Explanation / Answer

a) Response variable:

the amount of time it takes a car to exit the parking space

Option C is correct.

b) Extraneous variables:

Time of Day

Mileage of Cars

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