This question shows 3 possible models. Delta R^2 is the adjusted R^2 value. Then F is...

This question shows 3 possible models. Delta R^2 is the adjusted R^2 value. Then F is the test statistic for adjusted R^2. The significance columns show the p-values for each measurement. The best model is the one with the lowest p-value for F.

The table below summarizes nested multiple regression models used to predict a person’s quality of life score.

	Model 1		Model 2		Model 3
	est.	sig.	est.	sig.	est.	sig.
intercept	16.68	<.001	9.16	<.001	7.57	<.001
size of social network	0.59	0.027	0.44	0.076	0.43	0.059
college degree	—		3.73	0.014	3.87	0.030
time (yrs) at current job	—		—		0.91	0.046
# of siblings	—		—		–0.68	0.146

R2R2	3.65%		8.01%		9.60%
ΔR2ΔR2	3.65%		4.36%		1.59%
FF (for ΔR2ΔR2)	5.00_(1,132)	0.027	6.20_(1,131)	0.014	1.13_(2,129)	0.325

Using the model information (parameter estimates and comparative model fit), provide a prediction for the quality of life score for a person with a social network of size 8, a college degree, 4 years at current job, and 3 siblings.
QOL = ˆy=y^=
Report answer accurate to 2 decimal places.

Be prepared to briefly justify your model choice.

Expert Solution

orchestra answered 1 year ago

prove by epsilon-delta definition that f:R->R given by f(x)=x^3 is continuous at x=2

Question 3 The hypothetical information in the following table shows the possible situation in 2016 if...

Question 3 The hypothetical information in the following table shows the possible situation in 2016 if the government does not use any policy. Year Potential Real GDP Real GDP Price Level 2016 RM165.8 billion RM178.3 billion 150 What problem will occur in the economy if no policy is pursued? If the government wants to keep real GDP at its potential level in 2016, should the central bank implement a contractionary or expansionary fiscal policy? Draw an aggregate demand...

f(r,?) f(x,y) r(cos(?)) = x r(cos(2?)) = ? r(cos(3?)) = x3-3xy2/x2+y2 r(cos(4?)) = ? r(cos(5?)) =...

f(r,?) f(x,y) r(cos(?)) = x r(cos(2?)) = ? r(cos(3?)) = x3-3xy2/x2+y2 r(cos(4?)) = ? r(cos(5?)) = ? Please complete this table. I am having trouble converting functions from polar to cartesian in the three dimensional plane. I understand that x=rcos(?) and y=rsin(?) and r2 = x2 + y2 , but I am having trouble understanding how to apply these functions.

Please Consider the function f : R -> R given by f(x, y) = (2 -...

Please Consider the function f : R -> R given by f(x, y) = (2 - y, 2 - x). (a) Prove that f is an isometry. (b) Draw the triangle with vertices A = (1, 2), B = (3, 1), C = (3, 2), and the triangle with vertices f(A), f(B), f(C). (c) Is f a rotation, a translation, or a glide reflection? Explain your answer.

3) Solve the initial value problems c) R′ + (R/t) = (2/(1+t2 )) , R(1) =...

3) Solve the initial value problems c) R′ + (R/t) = (2/(1+t2 )) , R(1) = ln 8. e) ) cos θv′ + v = 3 , v(π/2) = 1. 5) Express the general solution of the equation x ′ = 2tx + 1 in terms of the erf function. 7) Solve x ′′ + x ′ = 3t by substituting y = x ′ 9) Find the general solution to the differential equation x ′ = ax + b,...

In this question, we are going to call a function, f : R → R, type...

In this question, we are going to call a function, f : R → R, type A, if ∀x ∈ R, ∃y ∈ R such that y ≥ x and |f(y)| ≥ 1. We also say that a function, g, is type B if ∃x ∈ R such that ∀y ∈ R, if y ≥ x, then |f(y)| ≥ 1. Prove or find a counterexample for the following statements. (a) If a function is type A, then it is type...

Find the cubic equation. F(x)=ax^3+bx^2+cx+d F(-1)=3 F(1)=1 F(2)=6 F(3)=7 What is the value of a,b,c,d

f: R[x] to R is the map defined as f(p(x))=p(2) for any polynomial p(x) in R[x]....

f: R[x] to R is the map defined as f(p(x))=p(2) for any polynomial p(x) in R[x]. show that f is 1) a homomorphism 2) Ker(f)=(x-2)R[x] 3) prove that R[x]/Ker(f) is an isomorphism with R. (R in this case is the Reals so R[x]=a0+a1x+a1x^2...anx^n)

2 Let F be a field and let R = F[x, y] be the ring of...

2 Let F be a field and let R = F[x, y] be the ring of polynomials in two variables with coefficients in F. (a) Prove that ev(0,0) : F[x, y] → F p(x, y) → p(0, 0) is a surjective ring homomorphism. (b) Prove that ker ev(0,0) is equal to the ideal (x, y) = {xr(x, y) + ys(x, y) | r,s ∈ F[x, y]} (c) Use the first isomorphism theorem to prove that (x, y) ⊆ F[x, y]...

3. Given is the function f : Df → R with F(x1, x2, x3) = x...

3. Given is the function f : Df → R with F(x1, x2, x3) = x 2 1 + 2x 2 2 + x 3 3 + x1 x3 − x2 + x2 √ x3 . (a) Determine the gradient of function F at the point x 0 = (x 0 1 , x0 2 , x0 3 ) = (8, 2, 4). (b) Determine the directional derivative of function F at the point x 0 in the direction given...

Question