9.51 The yield stresses were studied for two sizes of steel rods, with results as follows: Estimate...

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9.51 The yield stresses were studied for two sizes of steel rods, with results as follows:

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Estimate the average increase in yield stress of the 14-mm rod over the 10-mm rod, with a confidence coefficient of 0.90.

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Probability And Statistics For Engineers

ISBN: 9781133006909

5th Edition

Authors: Richard L Scheaffer, Madhuri Mulekar, James T McClave, Cecie Starr

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Question Posted: Sep 19, 2024 02:22 PM

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9.51 The yield stresses were studied for two sizes of steel rods, with results as follows: Estimate the average increase in yield stress of the 14-mm rod over the 10-mm rod, with a confidence...
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9.51 The yield stresses were studied for two sizes of steel rods, with results as follows: Estimate...

Question:

10-mm-diameter Rods 14-mm-diameter Rods n = 51 12=12 X = 485 N/mm S = 17.2 2=499 N/mm $2 = 26.7

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Probability And Statistics For Engineers

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