In Testing the Difference Between the Means of Two Normally

question 128

Multiple Choice

In testing the difference between the means of two normally distributed populations, the number of degrees of freedom associated with the unequal-variances t test statistic usually results in a non-integer number. In this situation, what is the best recommendation in order to proceed?

• A) You should round it up to the nearest integer.
• B) You should round it down to the nearest integer.
• C) You should change the sample sizes until the number of degrees of freedom becomes an integer.
• D) You should assume that the population variances are equal, and then use df =.

---

Definitions:

Machine 1

A term referring to a specific machine within a series or factory setup, usually designated as the first in a sequence or category.

Dependent Demand

The demand for a product that is directly linked to the demand for another product, such as the demand for parts or raw materials needed to produce a final product.

MRP

Material Requirements Planning, a production planning, scheduling, and inventory control system used to manage manufacturing processes.

Phantom Bills

Virtual or imaginary bills of materials used for planning and process mapping without affecting actual inventory.