Use the following information for questions 1-5. Do larger families spend more per week on food?

Use the following information for questions 1-5. 

Do larger families spend more per week on food? A sample of 10 families in Chicago revealed the following data for family size and the weekly grocery bill. (Part of the calculations are done for you.)

           Family size     $Groceries     (X-Xbar)        (Y-Ybar)      (X-Xbar) x (Y-Ybar)

•          3                 99                -1                 -11                        11
•          6                114                2                    4                          8
•          5                131                1                   21                       21
•          6                129                2                   19                       38
•          6                142                2                   32                       64
•          3                111               -1                    1                       
•          4                104                0
•          2                  81
•          2                  98
•          3                  91
•         40             1100

Sx = 1.63    Sy = 19.28    X-bar = 40/10 = 4   Y-bar = 1100/10 = 110