ABC company has recently developed a smart robotic system (SRS) used for disinfecting tasks as a...

ABC company has recently developed a smart robotic system (SRS) used for disinfecting tasks as a part of prevention actions in banks against COVID-19 infection. The SRS can freely roam in the banking waiting halls scanning and spraying disinfectants to seats, rods, surfaces and tables of tellers on regular time intervals. SRS has two microchips in its brain. While scanning, one of these chips collects data from the scanned surfaces and processes the data into information and sends the processed information to the other chip. The second chip, in turn, controls and guides the SRS to successfully complete the disinfecting tasks. The failure time distribution of each chips is constant with rate of 5X10^-4 per hour. If any of the chips fails, SRS stops functioning. ABC sells SRS for $500 with a one-year warranty. ABC’s customer satisfaction policy dictates to refund fully for any SRS system that fails during this one-year warranty period. In addition, the Quality Assurance Department of ABC estimates the loss of goodwill of lost customers due to SRS failure beyond the warranty period but before its expected life time as $14 per unit. However, any failure beyond the expected useful life of the SRS is not expected to cause any loss of goodwill. ABC conducted an after-sales survey and the results indicated that SRS is being used for almost 1.5 hours per day on the average as banks are not fully operating during the COVID-19 pandemic restrictions. According to the sales reports, around 750 units of SRS are expected to be sold per year.

What is the expected life of SRS system?
How many of the 750 sold in a year are expected to be returned during the warranty period?
What is the expected remaining lifetime of SRS that has been in operation for 3 years?

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Expert Solution

This is a reliability problem.

Initially the system reliability is found out and then the service life for the system.

The answers to the questions are as follows:

1. The expected life of the SRS system is 667 days.

2.Max one unit may get returned during the warranty period.

3. For the units in operation for three years, the expected remaining life for them is 222 days. (Based on 1.5 hour usage per day).

The detailed working has been attached herewith.

keosha answered 1 year ago

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