When is a dummy variable used as an independent variable in a ...

[haleyc112]

When is a dummy variable used as an independent variable in a regression model?
 
  A) when the variable involved is numerical
  B) when the variable involved is categorical
  C) when the variable involved is continuous
  D) when two independent variables interact

Question 2

For any significance level , the two-sided rejection region Z  z/2 or Z  -z/2 has a Type I error probability equal to 1 - .
 
  Indicate whether the statement is true or false

[heinisk01]

Answer to Question 1

B

Answer to Question 2

FALSE

[haleyc112]

TYSM

[bimper21]

Thanks for the timely response, appreciate it