the subject is called: work measurements and ergonomics

Conduct a preliminary work sampling study in library laboratory / ATM facility any other facility and determine: (a) Percentage of utilization of the facility in a day or week (b) Number of observations or sample size for 95.45% confidence level and 3% acceptable error Note: Use random number table for taking the observations (take 25 observations) Use Microsoft Excel Observation Random number Working Clock time Idle 1 2 3 4 5 6 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Total Conduct a preliminary work sampling study in library laboratory / ATM facility any other facility and determine: (a) Percentage of utilization of the facility in a day or week (b) Number of observations or sample size for 95.45% confidence level and 3% acceptable error Note: Use random number table for taking the observations (take 25 observations) Use Microsoft Excel Observation Random number Working Clock time Idle 1 2 3 4 5 6 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Total