Engineering, 22.11.2019 06:31 acebeann

Acivil engineer is analyzing the compressive strength of concrete. compressive strength is approximately normally distributed with variance σ2 = 800 psi2. it is desired to estimate the compressive strength with an error that is less than 13 psi at 95% confidence. what sample size is required? round your answer up to the nearest whole number. the answer must be exact.

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Acivil engineer is analyzing the compressive strength of concrete. compressive strength is approxima...

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