The critical values z or z / 2 are the boundary values for:

The critical values z or z / 2 are the boundary values for:
 a. the rejection region(s).
  b. the level of significance.
  c. Type I error.
  d. Type II error.

Q. 2

One of the requirements of regression analysis is that the dependent variable must be:
 a. discrete.
  b. continuous.
  c. interval.
  d. nominal.

Q. 3

Suppose that we reject a null hypothesis at the 0.05 level of significance. Then for which of the following -values do we also reject the null hypothesis?
 a. 0.06
  b. 0.04
  c. 0.03
  d. 0.02

Q. 4

In a multiple regression analysis, which procedure permits variables to enter and leave the model at different stages of its development?
 a. Stepwise regression
  b. Backward elimination
  c. Residual analysis
  d. Forward selection