An engineering firm offers testing for electrical products. Currently they are testing a type of compact portable music player. They randomly select a number of the music player and conduct a series of tests and compute an overall score for each unit based upon the results of the testing routine.They determine that the test scores are normally distributed with a mean of 379 and a variance of 1,310.A unit is deemed faulty if it scores below 320.Find the probability of a random unit being faulty. Give your answer as a decimal to 2 decimal places.
This question was answered on: Sep 21, 2023
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