Mathematics, 05.08.2020 18:01 ijohnson020702
The relationship between energy consumption and household income was studied, yielding the following data on household income X (in units of $1,000/year) and energy consumption Y (in units of 108 Btu/year).
Energy Cons. (y) HH Income )x)
1.8 20.0
3.0 30.5
4.8 40.0
5.0 55.1
6.5 60.3
7.0 74.9
9.0 88.4
9.1 95.2
a) Plot a scattergram of these data
b) Estimate the linear regression equation ? Y/x = ?0 + ?? x.
c) If x = 50 (household income of $50,000), estimate the average energy consumed for households of this income. What would your estimate be for a single household?
d) How much would you expect the change in consumption to be if any household income increases $2000/year?
Answers: 3
Mathematics, 21.06.2019 17:20
Match the equivalent expressions. x - 3y + 12 12 - 3y - 2x + x + 2x 3x + 2y - 2x + y + 12 3y + 12 3x + y - 12 4y + 3y + 3x - 6y - 10 - 2 x + 3y + 2x - 3x + 7 + 5 x + 3y + 12 5 + 2y + 7x - 4x + 3y - 17
Answers: 1
The relationship between energy consumption and household income was studied, yielding the following...
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