The symbol xo refers to: a. the difference in the means of two ...

[cookcarl]

The symbol xo refers to:
 a. the difference in the means of two independent populations.
  b. one matched pairs difference.
  c. the mean difference in the pairs of observations.
  d. None of these choices.

Question 2

The term seasonal variation may refer to:
 a. systematic patterns that occur during the period of one week
  b. systematic patterns that occur over the course of one day
  c. the four traditional seasons
  d. All of these choices are true

[Chelseyj.hasty]

Answer to Question 1

C

Answer to Question 2

D