Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 07 Jan 2018 My Price 3.00

mean compression strength

Eleven core samples of fresh concrete are taken by a county engineer from the loads of 11 concrete trucks used in pouring a structural footing. After curing, the engineer tests to find a mean compression strength of 3027 lb/in2 with a standard deviation of 53 lb/in2. State codes require a minimum strength of 3000 lb/in2 at 95% confidence. Should the footing be repoured based on a 95% confidence interval of the test data?

 

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Maurice Tutor
(5)
Status NEW Posted 07 Jan 2018 10:01 PM My Price 3.00

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