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The Mean Gross Annual Incomes of Certified Tack Welders Are

question 158

Multiple Choice

The mean gross annual incomes of certified tack welders are normally distributed with the mean of $50,000 and a standard deviation of $4,000. The ship building association wishes to find out whether their tack welders earn more or less than $50,000 annually. The alternate hypothesis is that the mean is not $50,000.
Which of the following is the alternate hypothesis?

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Definitions:

Demand

The quantity of a good or service that consumers are willing and able to purchase at a given price over a specified period.

Elastic

Describes a situation where the quantity demanded or supplied of a good is sensitive to changes in its price.

Current Margin

The existing difference between a company's sales and its variable costs, indicating the portion of sales revenue that covers fixed costs and profits.

Desired Margin

The target profit margin a company aims for in pricing its products or services.

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