Problem 7-3 A time study was conducted on a job that contains four elements. The observed times and performance ratings for six cycles are shown in the following table OBSERVATIONS (minutes per cycle) 2 Element 1 2 Performance Rating 98% 85 110 100 0.5e 1 0.44 1.50 0.84 1.10 1.52 0.89 1.14 3 0.43 1.47 0.77 4 2.45 1.51 @.83 1.13 5 0.45 1.49 0.86 1.16 6. 0.46 1.52 0.0 1.26 4 1.08 a. Determine the average cycle time for each element (Round your answers to 3 decimal places.) Element Average cycle 2 b. Find the normal time for each element (Round your answers to 3 decimal places.) Element formal time 4 c. Assuming an allowance percentage of 16 percent of job time, compute the standard time for this job. (Round your answers to 3 decimal places.) Element Standard time 1 2 Problem 7-4 Given these observed times (in minutes) for four elements of a job, determine the observed time (OT) for each element. Note The second element only occurs every other cycle (Round your answers to 2 decimal places.) Element 1 2 3 1 4.1 2 3.6 2.1 3.1 4.1 CYCLE 3 4 4.1 2.1 4.1 3.1 2.6 5 4.1 - 3.1 2.6 6 4.1 2.1 3.1 2.6 3.2 2.6 3.6 2.6 Observed Time Element 1 2 ces 3 4 Problem 7-5 Given these observed times (in minutes) for five elements of a job, determine the observed time (OT) for each element. Note: Some of the elements occur only periodically. (Round your answers to 2 decimal places.) 1 1.0 5 6 1.0 Element 1 2 3 4 5 CYCLE 3 4 1.0 1.0 .5 2.0 3.0 4.0 1.0 2 1.0 .5 2.0 - .5 2.0 .5 2.0 2.0 3.0 .5 .5 Observed Time Element 1 2 3 4 5 Problem 7-7 A worker-machine operation was found to involve 4 3 minutes of machine time per cycle in the course of 40 cycles of stopwatch study. The worker's time averaged 28 minutes per cycle, and the worker was given a rating of 118 percent (machine rating is 100 percent) Midway through the study, the worker took a 10-minute rest break. Assuming an allowance percentage of 18 percent of work time which is applied only to the worker element (not the machine element), determine the standard time for this job. (Do not round intermediate calculations. Round your final answer to 2 decimal places.) Standard time minutes