20. The distribution of life ofa special type of bulb used by a company is as follows:...
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20. The distribution of life ofa special type of bulb used by a company is as follows:
The cost of replacing an individual bulb when it fails is Rs 5 while the cost when replaced on a group basis is Rs 2 per bulb. The company has one thousand bulbs of this type installed.
(a) Calculate average life of a bulb.
(b) Determine if the policy of group replacement is superior to the policy of individual replacement.
Consider the periods of 1 month, 2 months, and 3 months, for replacement.
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Rustia Melrod
I am a retired teacher with 6 years of experience teaching various science subjects to high school students and undergraduate students. This background enables me to be able to help tutor students who are struggling with the science of business component of their education. Teaching difficult subjects has definitely taught me patience. There is no greater joy for me than to patiently guide a student to the correct answer. When a student has that "aha!" moment, all my efforts are worth it.
The Common Core standards are a useful yardstick for measuring how well students are doing. My students consistently met or exceeded the Common Core standards for science. I believe in working with each student's individual learning styles to help them understand the material. If students were struggling with a concept, I would figure out a different way to teach or apply that concept. I was voted Teacher of the Year six times in my career. I also won an award for Innovative Teaching Style at the 2011 National Teaching Conference.
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