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

question 102

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.Using $\alpha$ = 0.10, the critical "t" values are _______.

• A)-2.120 and 2.120
• B)-2.131 and 2.131
• C)-1.753 and 1.753
• D)-1.746 and 1.746
• E)-2.567 and 2.567

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Definitions:

Bathypelagic

Referring to the deep-sea zone, lying between about 1000 to 4000 meters below the ocean's surface, characterized by complete darkness.

Epipelagic

The uppermost layer of the ocean, extending from the surface down to about 200 meters, where sunlight is plentiful, supporting a diverse range of life.

Thermal Vents

Openings in the Earth's surface from which heated geothermal water and gases are released into the ocean, often supporting unique ecosystems.

Hydrogen Sulfide

A colorless, poisonous gas with the characteristic foul odor of rotten eggs, often produced by the decomposition of organic matter.