This paper proposed an algorithm for finding critical value of normal population variance under…
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本文研究在正态总体下，铁路装卸笨重货物专用起重机起重量的确定方法。
A method of determining elevating capacity for cranes in loading and unloading railway heavy goods is discussed, considering single loads of consignment of goods as a normal mass.
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从置信区间本质意义出发，得到了对数正态总体参数的联合置信域以及置信域的面积公式。
Based on the definition of the confidence interval, we obtained the combination confidence region of the Lognormal population and the area formula of the combination confidence region.
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