Let x be the area (in square feet) to be covered with blacktop and let y be the time (in minutes) it takes a construction crew to completely cover the area. The simple linear regression model relates x and y where the least squares estimates of the regression parameters are b = 0.207 and a = 81.6.
What is the least-squares best-fitting regression line? = ______________
What is the estimated amount of time it takes to apply 2400 square feet of blacktop?
______________ (minutes)
What is the average change in time per one square foot increase in area?
______________ (minutes)

Question

Let x be the area (in square feet) to be covered with blacktop and let y be the time (in minutes) it takes a construction crew to completely cover the area. The simple linear regression model relates x and y where the least squares estimates of the regression parameters are b = 0.207 and a = 81.6.
What is the least-squares best-fitting regression line?  = ______________
What is the estimated amount of time it takes to apply 2400 square feet of blacktop?
______________ (minutes)
What is the average change in time per one square foot increase in area?
______________ (minutes)

Quizplus · Accepted Answer

The Answer of Let x be the area (in square feet) to be covered with blacktop and let y be the time (in minutes) it takes a construction crew to completely cover the area. The simple linear regression model relates x and y where the least squares estimates of the regression parameters are b = 0.207 and a = 81.6.
What is the least-squares best-fitting regression line?  = ______________
What is the estimated amount of time it takes to apply 2400 square feet of blacktop?
______________ (minutes)
What is the average change in time per one square foot increase in area?
______________ (minutes)

Let X Be the Area (In Square Feet) to Be