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OpenStudy (raffle_snaffle):
An article suggested that yield strength (ksi) for A36 grade steel is normally distributed with μ = 45 and σ = 4.5. (a) What is the probability that yield strength is at most 40? Greater than 62? (Round your answers to four decimal places.) (b) What yield strength value separates the strongest 75% from the others? (Round your answer to three decimal places.)
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