单项选择题

下列哪个算法属于层次聚类算法？
A、PAM
B、K-modes
C、DIANA
D、DBSCAN

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单项选择题

毛泽东在解放战争中提出了著名的（），把人民战争的战略战术发展到一个新水平。

A.十大军事原则
B.论持久战
C.政治建军
D.武装夺取政权

单项选择题

How many Kleenex should the Kimberly Clark Corporation package of tissues contain? Researchers determined that 60 tissues is the average number of tissues used during a cold. Suppose a random sample of 100 Kleenex users yielded the following data on the number of tissues used during a cold: = 52, s = 22. Suppose the test statistic does fall in the rejection region at = 0.05. Which of the following decisions is correct?

= 0.05, we reject H0.
B． At

= 0.05, we do not reject H0.
C．At

= 0.05, we accept H0.
D．At

= 0.10, we do not reject H0.