If Two Random Samples of Size 40 Each Are Selected $x _ { 1 } - x _ { 2 }$

question 31

True/False

If two random samples of size 40 each are selected independently from two populations whose variances are 35 and 45,then the standard error of the sampling distribution of the sample mean difference, $x _ { 1 } - x _ { 2 }$
,equals 1.4142.

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Definitions:

Normal Rate

A term often used to refer to the standard or commonly accepted rate for a financial or economic measurement, but can vary by context.

Opportunity Cost

The cost of forgoing the next best alternative when making a decision or investment.

Economic Profits

Profits exceeding the opportunity costs of all resources employed, reflecting a return beyond the normal profit level.

Economic Costs

The total value of all the resources used in the production of goods or services, including both explicit and implicit costs.