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【单选题】
测定铁矿石中Fe％，求得置信度为95％时平均值的置信区间为35．21±1．10，对此区间的正确理解是( )。
A.
在已测定的数据中有95 ％的数据在此区间
B.
若再作测定x有95％将落在此区间
C.
总体平均值μ落在此区间的概率为95％
D.
在此区间内包括总体平均值μ的把握为95％
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