Asocial scientist would like to analyze the relationship between educational attainment (in years of higher education) and annual salary (in $1,000s). he collects data on 20 individuals. a portion of the data is as follows:
education 3 4 6 2 5 4 8 0
salary $40 36 56 35 72 47 107 52
a) find the sample regression equation for the model: salary = ? 0 + ? 1education + ? . (round intermediate calculations to 4 decimal places. enter your answers in thousands rounded to 2 decimal places.)
b) interpret the coefficient for education.
c) what is the predicted salary for an individual who completed 7 years of higher education? (round intermediate coefficient values to 2 decimal places and final answer, in dollars, to the nearest whole number.)

the answers c

answer: b. f(x) = (x + 2)^3 (x^2 - 7x + 3)^4

step-by-step explanation:

polynomials always have as many roots as their order. this is a 4th order polynomial- hence 4 roots!

complex roots of polynomials always come in pairs. the quadratic equation has the "+/-" in that will alwaysgenerate m+ni amd m-ni, so 7-2i must be a root of this polynomial equation.

the order of the numerator and denominator are both 2. so the horizontal asymptote is y=a2/b2 =7

verticle asymptotes are the forbidden x-values. f(x) becomes undefined at x=-3 because this value will cause a zero denominator.

a graph of r(x) will have vertical asymptotes at ±1 because these values will make the denominator zero. so the domain of the function cannot include ±1.

you 're wlecome! : )

cretdit to source

investment b is an ordinary annuity with $3,909.64 in the account after one year.

step-by-step explanation:

you divide them and then you get the answer i took this class this year

step-by-step explanation: