1. The following are true about stopwatch time except:

a. A performance rating is usually necessary

b. Jobs that have varying task requirements can pose some difficulty

c. Several repetitions are usually timed.

d. It is well-suited for repetitive jobs.

e. There is no record of the method used by the worker.

2. In time study, the Normal Time (NT) is the average of observed times.

True False

3. To set the required sample size in a work sampling, you must know:

a. the number of parts produced per day.

b. the number of employees.

c. the desired accuracy and confidence levels.

d. managements philosophy toward sampling.