a) If we take 100 random components, how many of them are expected to “live" 7.5 years or more? (round up to the next integer) b) What is the probability that in a random sample of 100 components, 10 or more will live at least 7.5 years? c) Suppose you were a vendor of such components. You want to provide a guarantee to your customers than any component that breaks down within the coverage period will be replaced without charge. If you want to replace only 3% of your components, how long should the coverage period be? (use one decimal point only)

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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#6) The average life of an electronic component is 6 years with a standard deviation of 1 year.
We may assume a normal distribution for the lifespan of such a component.
a) If we take 100 random components, how many of them are expected to "live" 7.5 years or
more? (round up to the next integer)
b) What is the probability that in a random sample of 100 components, 10 or more will live at
least 7.5 years?
c) Suppose you were a vendor of such components. You want to provide a guarantee to your
customers than any component that breaks down within the coverage period will be replaced
without charge. If you want to replace only 3% of your components, how long should the
coverage period be? (use one decimal point only)
Transcribed Image Text:#6) The average life of an electronic component is 6 years with a standard deviation of 1 year. We may assume a normal distribution for the lifespan of such a component. a) If we take 100 random components, how many of them are expected to "live" 7.5 years or more? (round up to the next integer) b) What is the probability that in a random sample of 100 components, 10 or more will live at least 7.5 years? c) Suppose you were a vendor of such components. You want to provide a guarantee to your customers than any component that breaks down within the coverage period will be replaced without charge. If you want to replace only 3% of your components, how long should the coverage period be? (use one decimal point only)
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