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. What is the proportion of idle time observed for this machine?
A)less than or equal to 5%
B)greater than 5% but less than or equal to 15%
C)greater than 15% but less than or equal to 25%
D)greater than 25%

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 basis.  What is the proportion of idle time observed for this machine?
A)less than or equal to 5% 
B)greater than 5% but less than or equal to 15% 
C)greater than 15% but less than or equal to 25% 
D)greater than 25%

Quizplus · Accepted Answer

Based on the work sampling method, the proportion of idle time observed for the machine falls between 15% and 25%. Therefore, the best choice is C.

A Work Sampling Method Is Used to Determine the Proportion