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An article suggested that yield strength (ksi) for A36 grade steel is normally distributed with ?...

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Basic Math

An article suggested that yield strength (ksi) for A36 gradesteel is normally distributed with ? = 45 and ? =4.5.

(a) What is the probability that yield strength is at most 40?Greater than 63? (Round your answers to four decimal places.)

at most 40    
greater than 63


(b) What yield strength value separates the strongest 75% from theothers? (Round your answer to three decimal places.)
ksi

Answer & Explanation Solved by verified expert
4.3 Ratings (683 Votes)
45sd 45a PZ    See Answer
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