I If We Are Testing for the Difference Between Two

question 74

Multiple Choice

i. If we are testing for the difference between two population means, it is assumed that the sample
Observations from one population are independent of the sample observations from the other
Population.
ii. If we are testing for the difference between two population means, it is assumed that the two
Populations are approximately normal and have equal variances.
iii. The critical value of t for a two-tail test of the difference of two means, a level of significance of
0) 10 and sample sizes of seven and fifteen, is ±1.734.

• 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), (ii), and (iii) are all false statements.

---

Definitions:

Significance

The quality of being worthy of attention; importance.

Soviet Intervention

Refers to the involvement by the Soviet Union in the internal politics of other countries, often to promote communist governance or prevent the spread of capitalism.

Hungarian Uprising

A nationwide revolt against the government of the Hungarian People's Republic and its Soviet-imposed policies, occurring in 1956.

Suez Canal

An artificial waterway in Egypt, connecting the Mediterranean Sea to the Red Sea, allowing for a shorter shipping route between Europe and Asia.