If Two Populations Are Not Known to Be Normally Distributed $\bar { X } _ { 1 } - \bar { X } _ { 2 }$

question 5

Short Answer

If two populations are not known to be normally distributed, the sampling distribution of the sample mean difference, $\bar { X } _ { 1 } - \bar { X } _ { 2 }$ , will be: $\begin{array}{|l|l|}\hline A&\text {normally distributed only if both population sizes are greater than 30 . }\\\hline B&\text {normally distributed. }\\\hline C&\text {normally distributed only if at least one of the sample sizes is greater than 30 . }\\\hline D&\text { approximately normally distributed.}\\\hline \end{array}$

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Definitions:

Target Costing

A pricing strategy where the selling price of a product is determined first, and then the manufacturing cost is managed to meet that target price.

Price Control

Government or company policies aimed at regulating or setting prices for goods and services in a market.

Economic Value

The quantification of the advantage that a product or service delivers to an economic participant.

Variable Cost

Costs that vary in total in direct proportion to changes in the level of activity or production volume.