单项选择题
A.(-∞,tα]和[tα,+∞)B.(-tα,+tα)C.(-∞,tα]和(-tα,+tα)D.[tα,+∞)和(-tα,+tα)
A.0.01〈P≤0.05B.P〉0.05C.P≤0.01D.0〈P〈1
A.0.01〈P≤0.05B.P〉0.05C.P〈0.01D.0〈P〈1