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

question 12

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 appropriate decision is _______.

• A) reject the null hypothesis and shut down the process
• B) reject the null hypothesis and do not shut down the process
• C) fail to reject the null hypothesis and shut down the process
• D) fail to reject the null hypothesis and do not shut down the process) do nothing

---

Definitions:

Tariff

A tax imposed by a government on goods and services imported from other countries, to regulate trade and protect domestic industries.

Protectionism

The economic policy of restricting imports from other countries through methods like tariffs and quotas to protect domestic industries.

Frederic Bastiat

Frederic Bastiat was a 19th-century French economist and writer known for his advocacy of free markets, individual freedoms, and his critiques of socialism.

Balance-Of-Trade Deficit

A situation where a country's imports exceed its exports, leading to a negative balance in trade.