Answer:
a= 13.15 years
b= -0.62 years/$
Step-by-step explanation:
Hello!
Given the variables
Y: Age of a used car. (years)
X: Price of a sold used car. ($000)
The linear regression model is:
E(Y)= α + βXi
The estimated equation is:
^Y= a + bXi
a= 13.15 years
b= -0.62 years/$
Then ^Y= 13.15 - 0.62Xi
Mean Y= 8.92
Mean X= 6.91
∑Y= 107
∑Y²=1009
∑X=82.90
∑X²=615.29
∑XY=712.9
Hope it helps!
Answer:
1046
Step-by-step explanation:
Answer:
k = 2
Step-by-step explanation:
subtract 9 from both sides and you have 3k=6
then divide by three on both sides to get 2
15!
x + 2y = ?
(7) + 2(4) = ?
7 + 8 = 15
Answer:
a.No
b.-7/2, it is at (4,-7/2)
c.-5?4, it is at (2,-5/4)
d.All real numbers except 6
e.3
f.-1/2
Step-by-step explanation:
a. Plug it in! f(5)=((5)+3)/((5)-6)=-8, so no!
b. Plug it in! f(4)=((4)+3)/((4)-6)=-7/2
c. Plug it in! f(2)=((2)+3)/((2)-6)=-5/4
d. If it were to be 6, then it would be 3/0 which would be undefined.
d.f(-3)=((-3)+3)/((-3)-6))=0/8
f.f(0)=((0)+3)/((0)-6)=-1/2
