Mathematics, 02.11.2019 04:31 scottmn
In the manufacture of electroluminescent lamps, several different layers of ink are deposited onto a plastic substrate. the thickness of these layers is critical if specifications regarding the final color and intensity of light are to be met. let x and y denote the thickness of two different layers of ink. it is known that x is normally distributed with a mean of 0.1 mm and a standard deviation of 0.00031 mm, and y is also normally distributed with a mean of 0.23 mm and a standard deviation of 0.00017 mm. assume that these variables are independent. a. if a particular lamp is made up of these two inks only, what is the probability that the total ink thickness is less than 0.2337 mm? b. a lamp with a total ink thickness exceeding 0.2405 mm lacks the uniformity of color that the customer demands. find the probability that a randomly selected lamp fails to meet customer specifications.
Answers: 3
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In the manufacture of electroluminescent lamps, several different layers of ink are deposited onto a...
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