A large school district is reevaluating its teachers' salaries. They have decided to use regression analysis to predict mean teacher salaries at each elementary school. The research has come up with the following prediction equation:
Y = $18012.24 + 1432.37X1 - 4.07 X2 where X1 = Yrs Exp and X2 = Yrs Exp2
(a) If a teacher has 7 years of experience, what is the expected salary?
(b) If teacher has 10 years of experience, what is the expected salary?
(a) $18012.24 + 1432.37(7 ) - 4.07(72 ) = $27,839.40
(b) $18012.24 + 1432.37(10 ) - 4.07(102 ) = $31,928.94
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