The Shelf Life of a Battery Produced by One Major

question 48

Multiple Choice

The shelf life of a battery produced by one major company is known to be Normally distributed, with a mean life of 3.5 years and a standard deviation of 0.75 years. If a sample of size 20 is repeatedly chosen at random, what is the standard deviation _x of sample means?

• A) 3.5 years
• B) 0.75 years
• C) 0.17 years
• D) 0.04 years

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Definitions:

Net Exports

The net amount obtained by subtracting the total imports from the total exports of a country.

Internationalized

The process of designing products, services, or operations to facilitate operation or distribution in multiple countries.

Budget Deficit

The financial shortfall when a government's expenditures exceed its revenues over a specified period.

Trade Balance

The gap between a nation's foreign sales and purchases, encompassing both goods and services.