National Welding Uses Industrial Robots in Some of Its Assembly-Line

question 139

Essay

National Welding uses industrial robots in some of its assembly-line operations. Management has determined that, on average, a robot breaks down after 1,000 hours of use and that the lengths of time between breakdowns are exponentially distributed.
a. What is the probability that a robot selected at random will break down between 300 and 600 hours of use?
Round your answer to two decimal places.
b. What is the probability that a robot will break down after 1,100 hours of use?
Round your answer to two decimal places.

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Definitions:

Levellers

A political group in the time of the English Civil War that supported the ideas of the people having power, broader voting rights, equal treatment under the law, and acceptance of different religious beliefs.

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The entitlements which allow an individual to vote in public elections and have their voice heard in the democratic process.

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Fundamental norms, rules, or values that represent what is desirable and positive for a person, group, organization, or community, and help it in determining the rightfulness or wrongfulness of its actions.

Parliamentary Consent

The approval or agreement by a parliament, especially required for legalizing legislation or decisions made by the government.