Question: A work sampling method is used to determine the proportion of the time a machine is idle. The following information was gathered on a random

A work sampling method is used to determine the proportion of the time a machine is idle. The following information was gathered on a random basis.
\table[[Day,\table[[No. Times],[Machine Idle]],\table[[Total No. of],[Observations]]],[Monday,4,12],[Tuesday,2,8],[Wednesday,4,10],[Thursday,2,10]]
What is the proportion of idle time observed for this machine?
 A work sampling method is used to determine the proportion of

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