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【判断题】
来自正态总体的样本均值用标准误s/【图片】进行标准化后服从自由度为n-1的t分布。A.
正确
B.
错误
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举一反三
【单选题】—If the ship is caught in the storm, what shall he do then? —Oh, do you still doubt________he will be able to deal with every terrible situation? [ ]
A.
whether
B.
that
C.
if
D.
how
【单选题】听力原文：M: Is it still raining outside? F: No, but the wind is still blowing. What do we know about the weather?
A.
It's still raining.
B.
The wind has stopped.
C.
The rain stopped.
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