An economist conducted a study of the possible association between weekly income and weekly grocery expenditures. The particular interest was whether higher income would result in shoppers spending more on groceries. A random sample of shoppers at a local supermarket was obtained, and a questionnaire was administered asking about the weekly income of the shopper's family and the grocery bill for that week. The graph below contains a scatterplot with a least-squares line. 200 180 160 140 120 100 80 60 40 20 0 200 400 600 800 1000 1200 Weekly Income The average income in the sample was $553. Based on the least-squares line, the average grocery bill for this sample was approximately: Weekly Grocery Bil 0

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An economist conducted a study of the possible
association between weekly income and weekly
grocery expenditures. The particular interest was
whether higher income would result in shoppers
spending more on groceries. A random sample of
shoppers at a local supermarket was obtained, and a
questionnaire was administered asking about the
weekly income of the shopper's family and the
grocery bill for that week. The graph below contains
a scatterplot with a least-squares line.
200
180
160
140
120
100
80
60
40
20
0
0
200
400
600
800
1000
1200
Weekly Income
The average income in the sample was $553. Based
on the least-squares line, the average grocery bill for
this sample was approximately:
Weekly Grocery Bil
Transcribed Image Text:An economist conducted a study of the possible association between weekly income and weekly grocery expenditures. The particular interest was whether higher income would result in shoppers spending more on groceries. A random sample of shoppers at a local supermarket was obtained, and a questionnaire was administered asking about the weekly income of the shopper's family and the grocery bill for that week. The graph below contains a scatterplot with a least-squares line. 200 180 160 140 120 100 80 60 40 20 0 0 200 400 600 800 1000 1200 Weekly Income The average income in the sample was $553. Based on the least-squares line, the average grocery bill for this sample was approximately: Weekly Grocery Bil
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