7. The semiconductor used in Costin Calculator has 5 components with the consistency of 90%, 95%, 98%, 90%, and 99%, respectively. How reliable is one product of calculator?
instruction: answer item 4, 6, and 7
4. Mancio Manufacturing Co. has asked you, as their IE, to check a labor standard prepared by a
recently resigned analyst. Determine the sample size you need considering your accuracy is to be
within 5%, standard deviation of the sample is 1.0 and the mean is 3.0.
6. At ASP Micro Manufacturing, Inc. workers press semiconductor into predrilled slots on printed-
circuit boards. Determine the normal time of the operation in seconds. The elemental motions for normal time used by the company are as follows:
• Reach 6 inches for semiconductors 10.5 TMU
• Grasp the semiconductors 8.0 TMU
• Move semiconductor to printed-circuit board 9.5 TMU
• Position semiconductor 20.1 TMU
• Press semiconductor into slots 20.3 TMU
• Move board aside 15.8 TMU
7. The semiconductor used in Costin Calculator has 5 components with the consistency of 90%, 95%,
98%, 90%, and 99%, respectively. How reliable is one product of calculator?
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