Answer: a. .7
Step-by-step explanation:
Multicollinearity means the two or more explanatory variables in a multiple regression model are highly linearly related to each other.
Multicollinearity is a problem because
- it weaken the statistical significance of an independent variable.
- Larger the standard error of a regression coefficient, the less likely it is that this coefficient will be statistically significant.
Multicollinearity may cause problems if the absolute value of the sample correlation coefficient for two of the independent variables exceeds 0.7.
So, the correct option is a. .7 .
Answer:
![x=5](https://tex.z-dn.net/?f=x%3D5)
Step-by-step explanation:
![77=4x+57](https://tex.z-dn.net/?f=77%3D4x%2B57)
Subtract 57 from both sides:
![4x=20](https://tex.z-dn.net/?f=4x%3D20)
Divide both sides by 4:
![x=5](https://tex.z-dn.net/?f=x%3D5)
So I think the question is basically asking for the minimum y value you could get from the functions.
For the first function,
![y=4 x^{2} +8x+1](https://tex.z-dn.net/?f=y%3D4%20x%5E%7B2%7D%20%2B8x%2B1)
to find the minimum y. (Use x=-b/2a to find its vertex)
so in this case a=4 b=8
x=-8/2(4)=-1 the the minimum value will have -1 as its x coordinates,
![y=4(-1)^2+8(-1)+1=4-8+1=-3](https://tex.z-dn.net/?f=y%3D4%28-1%29%5E2%2B8%28-1%29%2B1%3D4-8%2B1%3D-3%20)
plug in x=-1 to find y.
(-1,-3) for minimum value for the first function
For the second function,
(-1,0) is the vertex of the function, which is the minimum of the function.
compare the first function with y=-3 and second function y=0.
The first function will have the least minimum value and the coordinates are (-1,-3).
Answer:
See image below
Step-by-step explanation:
Answer:
Alright, we know that we have to spend 499 dollars on a computer as a base cost. Next, we have to buy 49.99 * x dollars worth of games (since games are 49.99 each), adding up to 499+49.99*x
Alright, so plugging 5 in for x, we get 499+49.99*5=744.95
Since one controller is 24.99, the money for buying a y amount of controllers would be 24.99*y., making the expression 499+49.99x+24.99y
Since in part D, there are no games, we plug these in to get
499+49.99*0++24.99*3=573.97 dollars
Step-by-step explanation: