Eight Low Watt Bulbs Are Tested for 600 Hours Each

question 101

Essay

Eight low watt bulbs are tested for 600 hours each. One failed at 80 hours and a second failed at 510 hours; all others completed the test. Calculate FR(%), FR(N) and MTBF.

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Definitions:

Standard Deviation

A statistical measure of the dispersion or variability within a data set, indicating how spread out the numbers are from the mean.

Optimal Cycle

The most efficient duration or sequence for a process or operation to minimize costs and maximize output.

Service Level

A measurement of the performance of a system, often used in supply chains to quantify the percentage of customer demands met without delay.

Overstocking Cost

Expenses incurred when a company holds more inventory than it can sell, including storage, insurance, and depreciation.