The Weight of a USB Flash Drive Is 30 Grams $\neq$

question 86

Multiple Choice

The weight of a USB flash drive is 30 grams and is normally distributed.Periodically, quality control inspectors at Dallas Flash Drives randomly select a sample of 17 USB flash drives.If the mean weight of the USB flash drives is too heavy or too light the machinery is shut down for adjustment; otherwise, the production process continues.The last sample showed a mean and standard deviation of 31.9 and 1.8 grams, respectively.The null hypothesis is ______.

• A)n \(\neq\) 17
• B)n = 17
• C)\(\mu\) = 30
• D)\(\mu\) \(\neq\) 30
• E)\(\mu\) ≥ 34.9

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Definitions:

Predetermined Overhead Rate

An estimated rate used to allocate manufacturing overhead to individual units of production based on a specific activity base.

Direct Labor-Hours

The total hours worked directly on the production of goods.

Manufacturing Overhead

All indirect costs associated with the production process, including costs related to factory operation but not directly traceable to the product, such as maintenance and utilities.

Work in Process

Inventory that is in the production process but is not yet completed.