Maurice Tutor

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About Maurice Tutor

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Teaching Since: May 2017
Last Sign in: 407 Weeks Ago, 6 Days Ago
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Education

  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

Experience

  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 07 Feb 2018 My Price 4.00

Ni maraging steel

10.   An experiment was performed to compare the frac- ture toughness of high-purity 18 Ni maraging steel with commercial-purity steel of the same type (Cor- rosion Sci., 1971: 723—736). The sample average toughness was x = 65.6 for m = 32 specimens of the high-purity steel, whereas for n = 38 specimens of commercial steel y = 59.8. Because the high- purity steel is more expensive, its use for a certain application can be justi ed only if its fracture tough- ness exceeds that of commercial-purity steel by more than 5. Suppose that both toughness distribu- tions are normal.

a.   Assuming that s1 = 1.2 and s2 = 1.1, test the relevant hypotheses using a = .001.

b.   Compute b for the test conducted in part (a) when m1 - m2 = 6.

Answers

Maurice Tutor
(5)
Status NEW Posted 07 Feb 2018 10:02 PM My Price 4.00

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