I If Samples Taken from Two Populations Are Not Independent

question 62

Multiple Choice

i. If samples taken from two populations are not independent, then a test of paired differences is
Applied.
ii. The paired difference test has (n1 + n2 - 2) degrees of freedom.
iii. The paired t test is especially appropriate when the sample sizes of two groups are the same.

• A) (i), (ii), and (iii) are all correct statements.
• B) (i) and (ii) are correct statements but not (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements but not (i).
• E) (i) is a correct statement but not (ii) and (iii).