The confidence interval is based on
mean square error. T<span>he </span>mean squared error<span> (</span>MSE<span>) </span><span>of an </span>estimator<span> measures the </span>average<span> of the squares of the </span>errors<span> or </span>deviations.<span> MSE is calculated by the formula attached in the picture, where Xbar is a vector of predictions, X is the vector of predicted values. </span>
Answer:
x = 0 or x = -2
Step-by-step explanation:
x^4+8x=0
Step 1: Factor left side of equation.
x(x+2)(x2−2x+4)=0
Step 2: Set factors equal to 0.
x=0 or x+2=0 or x2−2x+4=0
x=0 or x=−2
Answer:
5
Step-by-step explanation:
We desire to evaluate the fraction: 
when k=3.
This is a simple substitution, so what is required is
- Replace k with the given number
- Simplify the resulting expression
Therefore, when k=3
You can try the same for any value of k.
Answer: 1st question• (-3, -45)
2nd question• x= -3
Step-by-step explanation:
just did it on edge
Y=8x+3
negative = down
positive= up
