In testing for the differences between the means of two ...

[tatyanajohnson]

In testing for the differences between the means of two independent populations where the variances in each population are unknown but assumed equal, the degrees of freedom is:
 a. n1 + n2 c. n1 + n2 - 1
  b. n1 + n2 - 2 d. None of these choices

Question 2

The time series component that reflects a wavelike pattern describing a long-term trend that is generally apparent over a number of years is called cyclical.
  Indicate whether the statement is true or false

[katheyjon]

Answer to Question 1

B

Answer to Question 2

T