A confidence interval for the independent variable X would ...

[vinney12]

A confidence interval for the independent variable X would specify ________.
 
  A) the uncertainty about the mean value of the dependent variable
  B) the possible values of X that are uncorrelated with the dependent variable
  C) all the possible values of X
  D) the probability distribution for the various values of X

Question 2

You are interested in examining the factors that determine the average length of stay by patients in hospitals across states.
 
  You collect data on the following variables:Y = statewide average hospital stayX1 = median state incomeX2 = 1 if the state is in the Northeast, 0 otherwiseX3 = 1 if the state is in the South, 0 otherwiseX4 = 1 the state is in the Midwest, 0 otherwiseX5 = 1 the state is in the West, 0 otherwiseBased on the data above, you run the following regression: Y = 0 + 1X1 + 2X2 + 3X3 + 4X4.Identify the length of stay for each of the four regions using the population slopes.

[Laurenleakan]

Answer to Question 1

A

Answer to Question 2

West: 0
Northeast: 0 + 2
South: 0 + 3
Midwest: 0 + 4