Time%20Study%20Example

Time%20Study%20Example - c. How many bouquets could be made...

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BIT 3414 – Clark Copyright © 2008 Stopwatch Time Study Example A grocery chain sells prewrapped flowers in its stores. The flowers are selected and wrapped in a central facility and then distributed to the stores in the area. A time study of the operation for assembling and wrapping a bouquet has been conducted, with the following results: Cycle Time (min) Performance Element 1 2 3 4 5 6 Rating Factor 1. Prepare paper wrapping 0.05 0.61 1.26 2.00 2.61 3.23 1.10 2. Select flowers 0.22 0.75 1.47 2.18 2.72 3.48 0.95 3. Arrange flowers and secure 0.43 1.03 1.81 2.43 3.01 3.81 1.05 4. Place bouquet in box for transport 0.51 1.15 1.88 2.52 3.12 3.92 0.90 Cycle Time, T a. What is the normal time for this job? b. Using a 15 percent allowance factor, what is the standard time for this job?
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Unformatted text preview: c. How many bouquets could be made by an average worker in a 3-hour period? d. If workers are paid piece-rate at $0.10 per bouquet, what would the average worker earn per hour? e. How many times do we need to observe (measure) the job to be 90% confident that the average cycle time computed, T, is within 5% of the true average cycle time? Elemental Times (min) Element 1 2 3 4 5 6 t t RF Nt 1. Prepare paper wrapping 0.05 0.10 0.11 0.12 0.09 0.11 0.58 0.0967 1.10 0.1064 2. Select Flowers 0.21 0.18 0.11 0.25 0.95 3. Arrange flowers and secure 0.21 0.28 0.34 0.25 0.29 0.33 1.70 0.2833 1.05 0.2975 4. Place bouquet in box 0.08 0.12 0.07 0.09 0.11 0.11 0.58 0.0967 0.90 0.0870...
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This note was uploaded on 12/04/2008 for the course BIT 3414 taught by Professor Clark during the Fall '08 term at Virginia Tech.

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