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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
When gasoline is pumped into the tank of a car, vapors are vented into the atmosphere. An experiment was conducted to determine whether y, the amount of vapor, can be predicted using the following four variables based on initial conditions of the tank and the dispensed gasoline:
x1 ¼ tank temperature (8F)
x2 = gasoline temperature (8F)
x3 = vapor pressure in tank (psi)
x4 = vapor pressure of gasoline (psi)
The data are given in Table 7.3 (Weisberg 1985, p. 138).
(a) Find
and s2.
(b) Find an estimate of ![]()
(c) Find
 and
 using Sxx and syx as in (7.46) and (7.47).
(d) Find R2 and ![]()


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