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Company A manufactures computer applications boards. They are concerned with the mean time before failures (MTBF), which they regularly measure.

Denote the sample MTBF as

Determine the number of failures that must be measured before µlies within 20 % of the true  µwith a 90% probability.

Assume the PDF is exponential, i.e., 

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  • Reference No.:- M91972360

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