Let x be the number of pieces of furniture in a delivery truck and y be the time (in hours) it takes the delivery person to deliver all the pieces of furniture. A simple linear regression analysis related x and y where the least squares estimates of the regression parameters are a = 1.85 and b = 0.55.
What is the least squares best-fitting regression line? 
= ______________
What is the slope of the equation?
______________
Interpret the slope of the equation. Does a positive slope make practical sense? Justify your answer.
________________________________________________________
What is the y-intercept?
______________
Interpret the y-intercept, does this make sense?
________________________________________________________
Use the least squares regression line to estimate the time it should take to deliver 10 pieces of furniture. (You may assume that 10 is in the range of the data.)
______________ (hours)
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