In a Manufacturing Process Involving Several Machines, the Average Down

question 72

Multiple Choice

In a manufacturing process involving several machines, the average down time t (in hours) for a machine that needs repair has the probability density function . Find the probability that a failed machine's down time is 4 hours or more. Round your answer to three decimal places. ​

• A)0.865
• B)0.998
• C)0.145
• D)0.135
• E)0.002

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Definitions:

Margin of Error

An expression of the amount of random sampling error in a survey's results, indicating a range within which the true value likely falls.

Degree of Confidence

Another term for confidence level, indicating the statistical probability that a parameter lies within a specified range.

Conservative Party

A political party espousing the values of conservatism, focusing on tradition, stability, and free market principles.

Confidence Interval

An estimated range based on sample data within which a population parameter is expected to lie, with a given degree of certainty.