I have a problem. Can any body guide me ?
We are manufacturing abouy 12000 starter motors a month.For the first three months, there are no failures in the field.From 5th month to the 9th month every month 3 to 4 failures are reported from the field. From 10th month to 19th month every month additional 6 to 7 failures are reported. 20 th month onwards, 10 to 12 failures are reported every month till our warranty period of 36 months.
I wish to calculate eta, beta & MTBF values from this data.
I want advice how to do this.When I use Minitab, the programme does not respond ,since the failure no. are too small compared to the population.
Thanking you in anticipation & with warm regards,
Ramesh M. Parkhi (from India )
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