The Mean Life of a Particular Brand of Light Bulb

question 78

Multiple Choice

The mean life of a particular brand of light bulb is 1000 hours and the standard deviation is 50 hours.It can be concluded that at least 89% of this brand of bulbs will last between ___.

• A)900 and 1100 hours
• B)950 and 1050 hours
• C)850 and 1150 hours
• D)800 and 1200 hours
• E)1050 and 1250 hours

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Definitions:

Accounts Receivable

Unpaid customer accounts for delivered goods or services to a company.

Operating Activities

Activities related to the daily operations of a business, such as selling products, managing costs, and paying employees, as reflected in the company’s cash flow.

Source Of Cash

Any activity or operation that brings money into the organization, increasing its cash availability.

Current Assets

Resources intended to be turned into cash, sold, or used up either within one year or over the course of the business's operating cycle, depending on which period is greater.