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need help please An article suggested that yield strength {ksi} for A35 grade steel is normally distributed with p = 42 and 0' = 5.5.

need help please

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An article suggested that yield strength {ksi} for A35 grade steel is normally distributed with p = 42 and 0' = 5.5. l USE SALT {a} What is the probability that yield strength is at most 38? Greater than 53'? {Round your answers to four decimal places.) greater than 53 E (b) What yield strength value separates the strongest 76% From the others? {Round your answer to three decimal places.)

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