(a) What is the probability that at most 39 greater than 67

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
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ISBN:9780547587776
Author:HOLT MCDOUGAL
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Chapter12: Angle Relationships And Transformations
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An article suggested that yield strength (ksi) for A36 grade steel is normally distributed with = 45 and = 5.5.
USE SALT
(a) What is the probability that yield strength is at most 39? Greater than 67? (Round your answers to four decimal places.)
at most 39.
greater than 67
(b) What yield strength value separates the strongest 75% from the others? (Round your answer to three decimal places.)
ksi
Transcribed Image Text:An article suggested that yield strength (ksi) for A36 grade steel is normally distributed with = 45 and = 5.5. USE SALT (a) What is the probability that yield strength is at most 39? Greater than 67? (Round your answers to four decimal places.) at most 39. greater than 67 (b) What yield strength value separates the strongest 75% from the others? (Round your answer to three decimal places.) ksi
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