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The scores of twelfth-grade students on the National Assessment of Educational Progress mathematics test have a distribution that is approximately Normal with mean mu = 343 and standard deviation sigma = 32. Choose one twelfth-grader at random. What is the probability that his or her score is higher than 343?.
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the project should cover four typical crack/fracture modes: fatigue, overload, hydrogen embrittlement, and stress corrosion cracking. Select typical cases to explain your understanding. 1. Find failure analysis reports/papers for the selected fracture modes, explain what the other investigators did and what you can improve if you do.
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