Suppose You Are Testing the Null Hypothesis That a Population

question 45

Multiple Choice

Suppose you are testing the null hypothesis that a population mean is less than or equal to 46, against the alternative hypothesis that the population mean is greater than 46.The sample size is 25 and α =.05.If the sample mean is 50 and the population standard deviation is 8, the observed z value is _______.

• A)2.5
• B)-2.5
• C)6.25
• D)-6.25
• E)12.5

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Definitions:

Actual Costs

The real or precise cost incurred in the production of goods or in the rendering of services, as opposed to estimated or standard costs.

Direct Labor Time Variance

This metric measures the difference between the actual hours worked and the standard hours planned, multiplied by the standard labor rate, assessing efficiency in production.

Direct Labor Hours

The total number of hours worked by employees directly involved in the manufacturing process, used as a measure for assigning labor costs to produced goods.

Completed Unit

A unit of product that has completed the manufacturing process and is considered ready for sale or delivery to the customer.