A:2sin15°cos15°
B:2sin215°-1
C:cos215°-sin215°
D:sin215°+cos215°
已知样本:12,7,11,12,11,12,10,10,9,8,13,12,10,9,6,11,8,9,8,10,那么频率为0.35的样本范围是( )
—Could you tell me how ________ Wangfujing Dajie?
—Sorry, I'm new here. I'm not sure.