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To bring the new team members up to speed as quickly as possible, Charlie plans to have them spend several days reviewing the Project Binder, which summarizes all pertinent project information. He also needs to get the team moving ahead on the project as quickly as he can. The next task in the project workplan is the development of the user interface design. This is a good area to involve the new team members. In anticipation of their arrival, Charlie plans to develop a document that outlines the process that is followed in developing a user interface. This will help the new team members understand the steps that will be followed for the work they will be performing.
Prepare this document outlining the five-step process that is used in user interface design. Remember that this document will be used by the new team members to help them understand what is expected in each step of the user interface design process.
Installing mufflers at the O’Sullivan Garage in Golden, Colorado, involves five work elements. Jill O’Sullivan has timed workers performing these tasks seven times, with the results shown in the following table:
By agreement with her workers, Jill allows a 10% fatigue factor and a 10% personal-time factor, but no time for delay. To compute standard time for the work operation, Jill excludes all observations that appear to be unusual or nonrecurring. She does not want an error of more than ±5%.
a) What is the standard time for the task?
b) How many observations are needed to assure a 95% confidence level?
The Miami Central Hotel has 400 rooms. Every day, the housekeepers clean any room that was occupied the night before. If a guest is checking out of the hotel, the housekeepers give the room a thorough cleaning to get it ready for the next guest. This takes 30 minutes. If a guest is staying another night, the housekeeper only “refreshes” the room, which takes 15 minutes.
Each day, each housekeeper reports for her 6-hour shift, then prepares her cart. She pushes the cart to her floor and begins work. She usually has to restock the cart once per day; then she pushes it back to the storeroom at the end of the day and delivers dirty laundry, etc. Here is a timetable:
1) Arrive at work and stock cart (0.10 hrs).
2) Push cart to floor (0.10 hrs).
3) Take morning break (0.33 hrs).
4) Stop for lunch (0.50 hrs).
5) Restock cart (0.30 hrs).
6) Take afternoon break (0.33 hrs).
7) Push cart back to laundry and store items (0.33 hrs). Last night, the hotel was full (all 400 rooms were occupied). People are checking out of 200 rooms. Their rooms will need to be thoroughly cleaned. The other 200 rooms will need to be refreshed.
a) How many minutes per day of actual room cleaning can each housekeeper do?
b) How many minutes of room cleaning will the Miami Central Hotel need today?
c) How many housekeepers will be needed to clean the hotel today?
d) If all the guests checked out this morning, how many housekeepers would be needed to clean the 400 rooms?
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