A P/OM Student Has Purchased a Four-Function Calculator for Use

question 13

Multiple Choice

A P/OM student has purchased a four-function calculator for use during exams.This calculator is perfectly reliable except for two parts: its microchip,which has a failure rate of one in every twenty hours of operation; and its battery,which has a failure rate of one in every ten hours of operation.Also,on average the battery will fail in five hours,with a standard deviation of 30 minutes.Assuming that a new battery has just been installed,what is the probability that the battery will perform reliably during a one-hour exam?

• A)0.05
• B)0.10
• C)0.20
• D)0.90
• E)0.95

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Definitions:

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Community-based organizations that provide services and support to improve the lives of residents, particularly immigrants and the poor, in urban areas.

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YMCA's

A worldwide organization known for its community programs designed to promote healthy living, support families, and foster social responsibility.

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