A time study has been conducted on a cellular telephone assembly operation. The data shown in Table
Question:
A time study has been conducted on a cellular telephone assembly operation. The data shown in Table H.6 (in minutes) were obtained. A standard time within ±3 percent of the true mean with 95 percent confidence is desired.
a. Calculate the standard time for the assembly operations.
b. How many more observations will be required?
Transcribed Image Text:
TABLE H.6 CELLULAR TELEPHONE TIME STUDY DATA OBSERVATION Work Element 1. Assemble unit 1 3 4 8 RF 0.81 0.78 0.75 0.70 0.80 0.79 0.82 0.80 1.0 1.2 2. Insert batteries 3. Test 4. Package 0.21 0.20 0.16 0.19 0.23 0.25 0.24 0.26 1.0 1.0 0.57 0.63 0.61 0.9 0.61 0.60 0.55 0.62 0.60 1.0 0.45 0.41 0.37 0.43 0.36 0.39 0.40 0.44 1.0 1.1
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Related Book For
Operations Management Processes and Supply Chains
ISBN: 978-0134741062
12th edition
Authors: Lee J. Krajewski, Manoj K. Malhotra, Larry P. Ritzman
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