The manager of the order-distribution center for North-woods Backpackers has a company directive to downsize his operation. He has decided to conduct work sampling studies of employees in the order-processing department, the ware-house area, and the packaging area. In the warehouse area he has 17 employees who locate items, pull them, and put themon conveyors to the packaging area. A work sampling study was conducted over a five-day period to determine the pro-portion of time warehouse employees were idle, and out of the 50 random observations, 400 employees were idle.a. How many observations should be taken if the managerwants to be 90% confident the estimate is within 5%of the actual proportion of time a warehouse employeeis idle?b. The manager also conducted a work sampling study of the packaging area and discovered that the 28 employ-ees were idle approximately 37% of the time. How might the manager redesign his operation to downsizeand be more efficient?
The manager of the order-distribution center for North-
woods Backpackers has a company directive to downsize his
operation. He has decided to conduct work sampling studies
of employees in the order-processing department, the ware-
house area, and the packaging area. In the warehouse area he
has 17 employees who locate items, pull them, and put them
on conveyors to the packaging area. A work sampling study
was conducted over a five-day period to determine the pro-
portion of time warehouse employees were idle, and out of
the 50 random observations, 400 employees were idle.
a. How many observations should be taken if the manager
wants to be 90% confident the estimate is within 5%
of the actual proportion of time a warehouse employee
is idle?
b. The manager also conducted a work sampling study of
the packaging area and discovered that the 28 employ-
ees were idle approximately 37% of the time. How
might the manager redesign his operation to downsize
and be more efficient?
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