Wpc300 Quiz 5 Regression Study Guide Graded A+

What would be the null hypothesis for testing a linear regression model with profit as the dependent variable and sales as the independent variable? {Ans: There is no linear relationship between profit and sales.}Which of the following statement is true based on the following regression equation?IQ = 4.0 + Reading Label * 5.6 {Ans: A unit point change in reading label will increase IQ by 5.6 point.}The unexplained variance in the regression analysis is also known as: {Ans: Residual variance}The value of R-Squared always falls between ________ and ________, inclusive. {Ans: 0 and 1}A manager wishes to predict the annual cost (y) of an automobile based on the number of miles (x) driven. The following model was developed: y = $1500 + 0.36x. If a car is driven 15000 miles in a year, the model predicts the annual cost of the car to be: {Ans: $6900}Which of the following assumptions is not true for multiple linear regression? {Ans: There will be a multi-collinearity effect.}