42) Sample observations of a claims processor made over a 160-hour work month reveal that the worker produced a total of 384 completed claims forms. The performance rating was 80%. The worker was idle 20% of the time (so that idle time should be subtracted from the total time when computing the average observed time). The allowance factor is 8%. What is the normal time per unit? A) 0.42 minutes B) 16.0 minutes C) 17.4 minutes D) 20.0 minutes E) 21.7 minutes 43) Sample observations of a claims processor made over a 160-hour work month reveal that the worker produced a total of 384 completed claims forms. The performance rating was 80%. The worker was idle 20% of the time (so that idle time should be subtracted from the total time when computing the average observed time). The allowance factor is 8%. What is the standard time per unit? A) 0.42 minutes B) 16.0 minutes C) 17.4 minutes D) 20.0 minutes E) 21.7 minutes 44) A time measurement unit, or TMU, is: A) the same as a Therblig. B) 0.00001 minute. C) 0.00001 hour. D) the duration of the easiest GET motion. E) an historical experience standard. 45) Therbligs: A) were invented by Frederick W. Taylor. B) were used during the scientific management era, and are no longer in use. C) are hyperactive rodent-like pets, whose name is associated with time standards. D) were named by Frank Gilbreth. E) are .0006 minutes in length. 46) Therbligs are: A) the smallest unit of time used in methods time measurement exercises. B) the largest unit of time used in methods time measurement exercises. C) basic physical elements of motion as used in methods time measurement exercises. D) the full range of motions required to complete a job as used in methods time measurement exercises. E) the smallest amount of time required to complete a job. 47) Predetermined time standards are an outgrowth of basic motions called: A) mini-movements. B) micro-motions. C) SAE standards. D) TMUs. E) therbligs. 48) Among the advantages of predetermined time standards are all EXCEPT which of the following? A) Unions accept them as fair. B) They are available before a task is actually performed. C) They can only be determined after work actually takes place. D) They can be established in a laboratory setting. E) No performance ratings are necessary. 49) What is a technique for estimating the percent of time a worker spends on various tasks? A) stopwatch time study B) simultaneous motion study C) work sampling D) standard elemental (historical) times E) predetermined (published) time standards 50) A bank manager wants to determine the percent of time the bank’s tellers are working and idle. He decides to use work sampling, and his initial estimate is that the tellers are idle 20% of the time. Approximately how many observations should be taken to be 95% confident that the results will not be more than 5% away from the true result? A) 6 B) 16 C) 44 D) 210 E) 246 51) The tally sheet data from a work sampling study provides information regarding: A) the number of wasted motions. B) the level of difficulty in a motion. C) the percent of time spent on various tasks. D) the quality of the work environment. E) the number of micro-motions involved.