A product service life is distributed normally with a Mean of 12 years and a Standard Deviation of 18 months.
HINT: Please make sure the Mean, Standard Deviation, and expected product life are represented by the same time interval ( either months or years).
Show your work.
1) What is the probability that this product will perform reliably for 12.5 years?
2) What is the probability that this product will fail due to wear out within 16 years?