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An accelerated life test on a large number of type-D alkaline batteries revealed that the mean life for a particular use before they failed is 19.0 hours. The distribution of the lives approximated a normal distribution. The standard deviation of the distribution was 1.2 hours. About 95.44 percent of the batteries failed between what two values?
Obligation
A legal or moral duty to do or not do something, often with legal implications if not fulfilled.
Indorses
Refers to the act of signing the back of a financial document, thus transferring rights or ownership.
Security Funds
Financial reserves set aside to cover potential losses or liabilities, often used in contexts such as investments, insurance, and real estate.
Stop-Payment Order
An order by a bank customer to his or her bank not to pay or certify a certain check.
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