A large school district is reevaluating its teachers salarie

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 Exp²If a teacher has 7 years of experience, the expected salary is $27,839

True or False?

Solution

the answer will be false

because given years of exp =7

here we will put x1=x2=7 in the regression line

now

y = 18012.24 + 1432.37*7 -4.07*7 = 18012.24 +10026.59 - 28.49 = 28010.34