Mathematics, 06.08.2019 03:20 bryn2433
The commercial division of a real estate firm is conducting a regression analysis of the relationship between x, annual gross rents (in thousands of dollars), and y, selling price (in thousands of dollars) for apartment buildings. data were collected on several properties recently sold and the following computer output was obtained.
the regression equation is
y =20.0 + 7.29 x
predictor coef se coef t
constant 20.000 3.2213 6.21
x 7.290 1.3622 5.29
analysis of variance
source df ss
regression 1 41,587.8
residual error 7
total 8 51,984.9
a. how many apartment buildings were in the sample?
b. write the estimated regression equation (to 2 decimals if necessary).
c. what is the value of sb1 (to 4 decimals)?
d. use the f statistic to test the significance of the relationship at a .05 level of significance.
compute the f test statistic (to 2 decimals).
what is the p-value?
p-value is (less than .01; between .01 and .025; between .025 and .05; between .05 and .10; greater than .10)
what is your conclusion?
e. predict the selling price of an apartment building with gross annual rents of $60,000 (to 1 decimal).
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