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23 August, 03:13

cement content: 7.0 sacks/yd3 water-cement ratio: 5.08 gal/sack cement specific gravity: 3.15 fine-aggregate specific gravity: 2.65 coarse-aggregate specific gravity: 2.45 aggregate grading: 30% fine; 70% coarse (by volume) free moisture (SSD basis) : 1.5% excess in fine aggregate 3.0% deficient in coarse aggregate entrained air: 6% (a) What is the as delivered weight of the cem

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  1. 23 August, 06:21
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    Suppose that a population parameter is 0.4 and many samples are taken from the population. If the size of each sample is 30, what is the standard error of the distribution of sample proportions?
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