【答案】:E
1题:成人红细胞数服从正态分布,而且过高过低均不正常,所以宜用正态分布法计算双侧95%医学参考值范围,计算公式为:
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/a686c9177f3e6709a25f306729c79f3df9dc55ce?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
,故选项C正确。2题:成人尿汞值呈偏态分布,且过高为异常,故应用百分位数法计算单侧95%医学参考值范围的上限,计算公式为:P
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/c8177f3e6709c93d1cad7b6f8d3df8dcd00054ce?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
,故选项A正确。3题:成人血铅含量服从对数正态分布,且过高为异常,故应将原始观察值进行对数变换后,采用正态分布法估计单侧95%医学参考值范围的上限,再求反对数即得到正常成人血铅含量的95%医学参考值范围,公式为:
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/7e3e6709c93d70cf56a5df95eadcd100bba12bce?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
,故选项E正确。4题:人体身高属于正态分布资料,且过高或过低均为异常,故应采用正态分布法计算双侧99%医学参考值范围,公式为:
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/6609c93d70cf3bc7f15fb874c300baa1cc112ace?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
,故选项D正确。