Mathematics, 28.04.2021 15:30 damondgriswold12
A civil engineer tested concrete samples to investigate the difference in strength, in newtons per square millimeter (N/mm2), between concrete hardened for 21 days and concrete hardened for 28 days. The engineer measured the strength from each sample, calculated the difference in the mean strength between the samples, and then constructed the 95 percent confidence interval, (2.9,3.1), for the difference in mean strengths.
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A civil engineer tested concrete samples to investigate the difference in strength, in newtons per s...
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