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:

Equivalent Units

A concept in cost accounting used to apportion costs to partially completed goods, expressed in terms of fully completed units.

Direct Labor

The payment for labor of employees directly involved in the generation of goods or the provision of services.

Equivalent Units

A concept used in cost accounting to convert the amount of work done on partially complete goods into a number of fully complete units.

Direct Materials

The raw materials that are directly traceable to the production of goods or services.