某类钢板的制造规格规定,钢板重量的方差不得超过0.016(千克)2,由25块钢板组成的一个随机样本给出样本方差为0.025(千克)2.则在显著水平a下,为检验钢板是否合格,用X2检验,则拒绝域为()
A.X2﹥X2a(24)
B.X2≥X2a(24)
C.X2﹥X2a(25)
D.X2≥X2a(25)
正确答案是A
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