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Problem 01.013 - Probability of fatigue failure - DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS A fatigue test is performed on rotating beam specimens where, for each rotation cycle, the specimens experience tensile and compressive stresses of equal magnitude. The cycles-to-failure experience with 69 specimens of 5160H steel from 1.25-in hexagonal bar stock was as follows: x₁ 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 8 12 6 10 8 5 2 3 2 1 O 1 f 2 1 3 5 where x; is the life in thousands of cycles and fis the class frequency of failures. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Problem 01.013.b - Predicting fatigue failure Presuming the distribution is normal, how many specimens are predicted to fail at less than 115 kilocycles? Presuming the distribution is normal, specimens are predicted to fail at less than 115 kilocycles.

Problem 01.013 - Probability of fatigue failure - DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS A fatigue test is performed on rotating beam specimens where, for each rotation cycle, the specimens experience tensile and compressive stresses of equal magnitude. The cycles-to-failure experience with 69 specimens of 5160H steel from 1.25-in hexagonal bar stock was as follows: x₁ 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 8 12 6 10 8 5 2 3 2 1 O 1 f 2 1 3 5 where x; is the life in thousands of cycles and fis the class frequency of failures. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Problem 01.013.b - Predicting fatigue failure Presuming the distribution is normal, how many specimens are predicted to fail at less than 115 kilocycles? Presuming the distribution is normal, specimens are predicted to fail at less than 115 kilocycles.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Problem 01.013 - Probability of fatigue failure - DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS A fatigue test is performed on rotating beam specimens where, for each rotation cycle, the specimens experience tensile and compressive stresses of equal magnitude. The cycles-to-failure experience with 69 specimens of 5160H steel from 1.25-in hexagonal bar stock was as follows: Xi 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 8 12 6 10 8 5 2 3 2 1 O 1 f 2 1 3 5 where x; is the life in thousands of cycles and fis the class frequency of failures. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Problem 01.013.b - Predicting fatigue failure Presuming the distribution is normal, how many specimens are predicted to fail at less than 115 kilocycles? Presuming the distribution is normal, specimens are predicted to fail at less than 115 kilocycles.
Transcribed Image Text:Problem 01.013 - Probability of fatigue failure - DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS A fatigue test is performed on rotating beam specimens where, for each rotation cycle, the specimens experience tensile and compressive stresses of equal magnitude. The cycles-to-failure experience with 69 specimens of 5160H steel from 1.25-in hexagonal bar stock was as follows: Xi 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 8 12 6 10 8 5 2 3 2 1 O 1 f 2 1 3 5 where x; is the life in thousands of cycles and fis the class frequency of failures. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Problem 01.013.b - Predicting fatigue failure Presuming the distribution is normal, how many specimens are predicted to fail at less than 115 kilocycles? Presuming the distribution is normal, specimens are predicted to fail at less than 115 kilocycles.
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