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1.Please calculate the covariance of the following data. Heating Cost Mean Outside Attic Insulation Age of Furnace Home ($) Temperature (F) (inches) (years) $250 35

1.Please calculate the covariance of the following data.

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Heating Cost Mean Outside Attic Insulation Age of Furnace Home ($) Temperature ("F) (inches) (years) $250 35 360 29 165 36 43 60 92 65 200 30 355 10 290 7 230 21 120 55 73 54 205 48 400 20 14 320 39 15 72 60 16 272 20 17 94 58 18 190 40 19 235 27 20 139 302. The following sample of observations was randomly selected. 5 4 13 15 12 13 11 a. Determine the regression equation. b. Determine the value of y when x is 7.

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