# Question

A sample of 10 households was monitored for one year energy consumed (1010 joules) were determined. The results follow.
a. Compute the least-squares regression line for predicting energy consumption from income.
b. Construct a residual plot. Verify that a linear model is appropriate.
c. If two families differ in income by \$12.000. by how much would you predict their energy consumptions to differ?
d. Predict the energy consumption for a family whose income is \$50.000.

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