The Life Expectancy of Timely Brand Watches Is Normally Distributed

question 148

Essay

The life expectancy of Timely brand watches is normally distributed with a mean of four years and a standard deviation of eight months.
a.What is the probability that a randomly selected watch will be in working condition for more than five years?
b.The company has a three-year warranty period on their watches. What percentage of their watches will be in operating condition after the warranty period?
c.What is the minimum and the maximum life expectancy of the middle 95% of the watches?
d.Ninety-five percent of the watches will have a life expectancy of at least how many months?

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Definitions:

Adverse

Unfavorable or harmful conditions or circumstances that can negatively affect or pose challenges to individuals or entities.

Necessity

A term that can refer to a state of being required or indispensable, or, in legal terms, a defense that asserts an act was done out of a need to prevent a greater harm.

Grant Deeds

A legal document used to transfer ownership of real property from the seller (grantor) to the buyer (grantee).

Bargain and Sell

A term used in real estate and contract law to refer to a type of conveyance or transfer of property ownership, often without the formalities of a traditional sale.