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By a work sampling study: Observed Data Number of Observation Proportion of manual labour (servicing time) T=1/4 The machine is being used (machine is running

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By a work sampling study: Observed Data Number of Observation Proportion of manual labour (servicing time) T=1/4 The machine is being used (machine is running and/or machine is random serviced) 2000 Proportion of machine time 1.-3/4 597 Allowance Time Tea time, Personnal time, Electrical shortages, etc., Total No. of observations 2597 No. of units produced in 100 hours duration = 5000 units Observed rating factor = 120% Total allowances (PDF1 Style)= 23% of normal time Daily working hours=9hr/employee a) What % (p) of the time Machine is being used (machine time+servicing time) roughly? b) What is the absolute error(1) of the percent Machine is being used? (95% CI) c) What is the relative error of the percent Machine is being used ? c) What is 95% confidence interval of working%? In sense of Relative and Absolute accuracy -both are askedIII- d) What is the actual production time (OT) taken per article (Attention:Be careful the observed time covers the service and machine time per article (OT) e) Calculate the observed manual labor time (means the service time) per article (Hint: Proportion of manual labour (servicing time) T 1/4) f) Calculate the normal labour time (service time) per unit you have calculated in c) Calculate the machine time per unit T. (Hint: Proportion of machine time = 3/4) g) By a work sampling study: Observed Data Number of Observation Proportion of manual labour (servicing time) T=1/4 The machine is being used (machine is running and/or machine is random serviced) 2000 Proportion of machine time 1.-3/4 597 Allowance Time Tea time, Personnal time, Electrical shortages, etc., Total No. of observations 2597 No. of units produced in 100 hours duration = 5000 units Observed rating factor = 120% Total allowances (PDF1 Style)= 23% of normal time Daily working hours=9hr/employee a) What % (p) of the time Machine is being used (machine time+servicing time) roughly? b) What is the absolute error(1) of the percent Machine is being used? (95% CI) c) What is the relative error of the percent Machine is being used ? c) What is 95% confidence interval of working%? In sense of Relative and Absolute accuracy -both are askedIII- d) What is the actual production time (OT) taken per article (Attention:Be careful the observed time covers the service and machine time per article (OT) e) Calculate the observed manual labor time (means the service time) per article (Hint: Proportion of manual labour (servicing time) T 1/4) f) Calculate the normal labour time (service time) per unit you have calculated in c) Calculate the machine time per unit T. (Hint: Proportion of machine time = 3/4) g)

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