問(wèn)答題某混凝土設(shè)計(jì)強(qiáng)度等級(jí)為C30,前期無(wú)足夠的統(tǒng)計(jì)資料。現(xiàn)抽取10組試件組成一驗(yàn)收批。試按標(biāo)準(zhǔn)差未知的統(tǒng)計(jì)方案驗(yàn)收該批混凝土是否合格?38.9MPa,40.3MPa,35.2MPa,38.4MPa,43.1MPa,38.2MPa,36.9MPa,39.3MPa,37.4MPa,36.6MPa。

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