If we are testing for the difference between the means of two ...

[Sportsfan2111]

If we are testing for the difference between the means of two independent populations with equal variances, samples of n1 = 15 and n2 = 15 are taken, then the number of degrees of freedom is equal to
 a. 13 c. 28
  b. 14 d. 29

Question 2

Random variation is one of the four different components of a time series. It is caused by irregular and unpredictable changes in a time series that are not caused by any other component. It tends to mask the existence of the other more predictable components.
  Indicate whether the statement is true or false

[Tabitha_2016]

Answer to Question 1

C

Answer to Question 2

T

[Sportsfan2111]

Thanks for the timely response, appreciate it

[nyrave]

Wow, this really help