Question: Suppose process times on a machine re exponentially distributed with a mean of 2 0 mins. ( a ) A part is currently been processed

Suppose process times on a machine re exponentially distributed with a mean of 20
mins.
(a) A part is currently been processed on that machine for 18 mins. What is the expected time
until completion of the job? (use memoryless property)
(b) A part is currently been processed on that machine for 30 mins. What is the expected time
until completion of the job?

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