In a Manufacturing Process Involving Several Machines, the Average Down

question 204

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:

Correlation

A numerical indicator showing how much two or more variables move in relation to each other.

Validity

The degree to which an idea, finding, or measure is grounded in reality and reflects the true state of affairs accurately.

Reliability

The degree to which an assessment tool produces stable and consistent results over time.

Hypothesis

A proposed explanation for a phenomenon, which can be tested through experimentation and research.