Yes, that was graphed correctly. :)
This shape would be an equilateral triangle, hope that helps!!
Answer: -2
because when -2+2=0
x/0 = undefined
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>
All of these questions will be exponents and variables.